Showing posts with label immune response. Show all posts
Showing posts with label immune response. Show all posts

Monday, May 27, 2013

36 Yr. Old Has Repeated Implantation Failure With Great Embryos...What's Wrong?


Question:
Dear Dr,

We have just had our 4th failed IVF (in vitro fertilization).
Our history.  I am 36, my husband is 39. 1st pregnancy was in 2009 after 3 IuI's (intra uterine insemination) and clomid, but had to terminate at 15 weeks due to large enphaloceale (was a random genetic mutation)and my 2nd pregnancy with IUI was a success with a full term healthy baby boy.

Started with IuI's for 2nd child in 2011! We had 10 IuI's and now 4 IVF's.  Each IVF has been with icsi (intracytoplasmic sperm injection) and this time we had Embryo hatching. Last 3 transfers were 3 top grade 8 cell embryos each time on day 3.  I am not a great responder and only ever have 5-7 eggs, of which usually 4 fertilise.
I have had all the immunity checks done, my husbands sperm dna damage is within normal, fertilisation rate is good.  My ovarian reserve was also checked and the level was 1.0- My specialist said that he wasn't overly worried about the reserve for my age.  I have had a hysteroscopy and all normal.  I have been on various drug protocols and this last one was the long Lupron cycle with menapur.

We are just not sure what to do next?  Do we keep going, as my doctors are very positive and we have the finances. Are my doctors missing something?  Is there anything else we can do to improve our chances.  I am on DHEA and Royal Jelly, and my hubby is also on supplements.
I am writing from CapeTown, South Africa.

Thank you for your consideration, R.
Answer:

Hello R. from South Africa,
The exact cause of your failure cannot be known as there are still four steps your embryo has to go through in order to produce a pregnancy: embryo has to develop to blastocyst, the blastocyst has to hatch our of its shell, it then has to attach to the uterine lining and the lining has to grow around it.  As of now, there is no technology that can make this happen.  "Assisted hatching" is just making a defect in the shell so that the embryo can exit (hatch) more easily.

Something I always worry about when I have patients tell me they have failed multiple cycles despite good embryos, is the quality of the final step of the IVF process, which is the transfer.  You can have the absolute best and perfect embryos but if the transfer technique is not done well, then it will fail.  This has been shown by numerous studies.  Since you have been going to the same clinic, I wonder if that is not the problem, in which case, I would recommend that you seek out a different clinic.
One thing that I do with my patients that is not universally accepted but done by many of us, is to use a recurrent miscarriage protocol to reduce the immune system, thinking that a heightened immune system might be at fault.  For this regimen I add low dose heparin or lovenox, medrol, low dose aspirin, extra estrogen and extra progesterone (both injectable and vaginal).  I don't think that DHEA does anything so I don't use it.

At 36 years old, I have a 66% pregnancy rate in my clinic.  By two to three attempts with good 8 cell embryos, you should already be pregnant.  Your rate should especially be increased over other 36 year olds since you have been pregnant before.  For these reasons, I think the fault may lie in your clinic and not in you or your husband. 
Good luck in your journey to have a second child,

Edward J. Ramirez, M.D.
Executive Medical Director
The Fertility And Gynecology Center
Monterey Bay IVF
www.montereybayivf.com
 
Monterey, California, U.S.A.

Saturday, October 13, 2012

40 Year Old UK Woman Trying IVF After Implantation Failures: Assisted Hatching & PGD?

PGD
QUESTION:
dear doctor ramirez, i am so glad to find you on this website and would very much appreciate your help. I will try to give you some background.

i have had 3 failed iui, then found problems with my fallopian tubes which led to bilateral salpingectomy, myomectomy, adhesiolysis and cornual tubal occlusion, left ovarian cystectomy, i also have fitz hugh curtis syndrome.


so then after recovery from the above op i had

one fresh ivf cycle - 18 follicles, 14 eggs collected, 8 fertilised, 3 day transfer of 2 embryos(8 cell, grade 2)on 18/10, started bleeding 30/10

fet - 19/3. 2 embryos transferred (5 cell grade 2 & 7 cell

grade 1-) Negative test 4/4

fet - 9/8. 2 embryos transfered (6 cell grade 3/3 & 3 cell grade 4/4) Negative test 24/8

on each occassion as you can see i had 2 embryos put back (blastacysts on the last fet) and all failed at implantation stage. these were in 2006 & 2007.

now in june 2012 i have started my ivf journey again. so far:

low amh result (i am 40 in october)

2 new fibroids found on ultrasound, advised to proceed anyway

down regulation extended 1 week as lining not thin enough

stim injections all went to plan

15 follicles (2 v large suspected to be cysts)

10 eggs retreived

7 fertilised

7 made it to blast but one left to perish as structure wasnt great.

2 fantastic blasts put back after using embryoscope which i was told had started collapsing which was explained as a very good development.

4 frozen.

so, 2 put back in and progesterone pessaries used one morning & 1 night.

day 5 post transfer sign of period.

evening of day 6 post transfer period definately started with heavy bleeding & clots, continued until today (day 9pt) flow seems to be slowing down.

negative test today 9dpt

clinic advised me to continue with pessaries and re-test on saturday (day 11 pt)
theres the background for you, so here are my questions:

1. why am i failing at implantation stage every time?

doctor says it just nature but i cannot help feeling something else could be wrong and i am running out of time

2. is there any kind of contraception or other medication that i could use to stop producing eggs, thus preserving the small reserve i have left?

3. what tests can i have done to rule out ANY other problems? ie immunology, uterine probs, endometrium probs?

4. fibroids-what should i do have them removed or is there any medication available that may shrink them before my next fet

5. assisted hatching-could this help?

6. pgd (preimplatation genetic diagnosis)?

7. having read my history but you advise i do????

if need be i will pay for any tests that they wont complete at my clinic. i feel if i can rule all other possible problems out then i can admit that yes it is in gods hands and just a matter of keep trying but at the moment i feel what if there is something else that is being overlooked?

many thanks for your help in advance doctor.

as you can see i am getting pretty desperate now!

lisa, uk

ANSWER:

Hello Lisa from the U.K.,

The term "Implantation failure" means that the last two steps of the reproductive process did not occur. These last two steps are natural steps and we do not have the technology to make them happen. That is why IVF is not a perfect technology. Once the embryo is placed into the uterus, the embryo has to hatch out of its shell and attach to the endometrial ining. Then the endometrial has to engulf the embryo (implantation). So either of these two steps could have been the source of failure. In addition, it is well know that pregnancy rates will vary from doctor to doctor and clinic to clinic because the transfer technique can play a significant role.

In your previous cycles, your embryo quality was poor. I am not surprised that they failed. In this last cycle, despite having good blastocysts, there is still a potential deficiency that they have. This is because of your age, or what I refer to as the "age related egg factor." We know that as the eggs age, the internal structures of the egg become more debilitated and so less likely to thrive. One of these deficits is the chromosomal structures are more brittle and can lead to chromosomal abnormalities as the cell is dividing. Without doing genetic testing, these cannot be detected. Even chromosomally abnormal embryos can turn into good looking embryos but not necessarily into pregnancies. That is another possible source of failure. IVF helps to overcome this problem by increasing the number of eggs retrieved and therefore, statistically, increases the chances of finding the perfect egg. But that does not occur every time. You will have to keep trying in the hopes of finding the perfect egg eventually. The good thing is that your ovaries are still very responsive (you don't have decreased ovarian reserve and stimulate well), which gives you a good chance.

In terms of your other questions, I would not do anything with the fibroids, any birth control pill can stop your ovaries from going through the ovulatory cycles and hopefully preserve your eggs and I can't think of any other testing. Without thoroughly reviewing your medical record, however, it is difficult for me to give you specific advice.

I would recommend assisted hatching as this has been shown to increase pregnancy rates in older patients. I would also recommend that you scrutinize your clinic, because of all the failures. Pregnancy rates can be very clinic and doctor dependent. You should try to find one that has good pregnancy rates for your age group. I am getting a 57% pregnancy rate in 40 year olds and many of the clinics in the U.S. are getting similar results. I would also recommend that you consider transferring more than two embryos (we allow up to 4 in 40 year olds).

You faith in God will help you through this, and eventually it will happen. You may have to change course at some point and look at a different approach, but your faith will get you to that dream of having a child. When I complete my embryo transfers, I say a prayer with each of my patients and ask God to bless my couple with fruit of the womb and grant their wish for a child. I am confident that he will do so as He wills it.

Good Luck

FOLLOW-UP QUESTION:
hi doctor

thank you so very much for your speedy and detailed response, it has set my mind at rest on a lot of points. it is interesting to be told that the quality of the embryos on our cycle a few years ago were of poor quality. although that is sad, at least now i can accept that maybe that is why we failed on those 3 occassions. i had been under the impression that the embryos were good quality, particularly on the first fresh cycle after egg collection.

i have read lots on assisted hatching and am glad you agree this may be a way forward for us.

can i please just take a few more minutes of your time to clarify my point on pgd & other test (point 3&6)

When you mention checking the quality of the eggs/embryos were you suggesting asking our clinic to go ahead with pgd for our next fet?

also what is your opinion on other testing such as Natural Killer cells, immunology, uterine/endo probs? Which of these or any other tests would you suggest i rule out before going ahead with our fet?

also you mention my ovarian reserve being good but i was under the impression that the AMH test i had done suggested i was on the bottom level in terms of my remaining eggs? this has confused me slightly?

thank you in advance.

many many many thanks for you time again. Lisa

FOLLOW-UP ANSWER:

Hello Again,

There are pros and cons about using PGS. It can help to identify embryos that are chromosomally abnormal so that you can be more selective in the ones that you transfer. The downside is that there is a decrease in pregnancy rates, probably because of the impact of the biopsy on the embryo.

I check certain immunologic testing on my patients that fail two or more IVF cycles. The tests I choose do not include natural killer cells because I don't believe in that concept as a source of implantation failure. Despite this testing, I also automatically place my patients on low dose aspirin, low dose heparin and medrol, as well as, increase the progesterone supplementation. The latter is the treatment for patients that have endometrial biopsy for beta integrins and find that they are deficient. I figure, why waste money on doing the test and just cover any ways, since increasing the progesterone is the treatment.

Remember that AMH is an "indirect" test for ovarian reserve and does not necessarily predict how you will respond. Your have already shown good response so it is not an issue.

Good Luck,

Dr. Edward J. Ramirez, M.D., FACOG
Executive Medical Director
The Fertility and Gynecology Center
Monterey Bay IVF Program
www.montereybayivf.com
Monterey, California, U.S.A.

Monday, June 4, 2012

Recurrent Pregnancy Loss (RPL) Workup Shows MTHFR: What Next?

Question:

Dear Dr. Ramirez,

I am 31 years old and have had 3 chemical pregnancies in the past 12 months. They have run a slew of genetic testing and a RPL (recurrent pregnancy loss) workup and all has come back normal with exception to the MTHFR test. I have tested positive for 1 copy of the MTHFR mutation. The nurse told me that because I was considered heterozygous that this was not a big deal. They prescribed me with a high dosage of Folic Acid. She said that it was likely not contributing to the repeat losses. I have been reading online and while the homozygous mutations seem to be more serious, there seem to be mixed reviews on whether this can contribute to early miscarriage.

Do you prescribe Lovenox or Heparin in this type of situation (only 1 copy?) Should I be concerned about this and demand that they treat it somehow? It doesn't seem like they are planning on doing anything besides the folic acid.

Also, given that this test has come back as it did, is there any other testing that you would reccommend that may be related to this? I am a little frustrated because this test was not originaly included in the work up and I had heard about it from online research and specifically requested it.

I just want to make sure that I am not missing anything.

Thank you,

D. from Boston

Answer:

Hello D. from the U.S. (Massachusetts),

The treatment for MTHFR (Methylenetetrahydrofolate reductase), is increased Folic acid (for more information MTHFR.net). But with your history of recurrent pregnancy loss or RPL, I usually will add the following to my patients, although there is not clear research backing it up if you are immunologically negative:

1. Low dose aspirin 81 mg starting with the start of the cycle

2. Low dose heparin 2000 units bid starting with the start of the cycle (you can substitute lovenox but it is more expensive).

3. Medrol 16 mg starting with the beginning of the cycle until ovulation then decrease to 8 mg

4. Increase progesterone supplementation of either Crinone 8% per day or Endometrin 100 mg three times per day starting after ovulation.

This cocktail has been shown to be effective in recurrent miscarriages (see Reproductive Immunology Associates for further information regarding immunological causes of miscarriage). My presumption is that you have had immunological testing, specifically antiphospholipid antibodies?

I hope this helps!

Good Luck,

Dr. Edward J. Ramirez, M.D., FACOG
Executive Medical Director
The Fertility and Gynecology Center
Monterey Bay IVF Program
www.montereybayivf.com
Monterey, California, U.S.A

Monday, December 26, 2011

Implantation Problems & Causes Of Chemical Pregnancy


Question:

Hi again, it's K. in NY. I have written to you in the past about my difficulties staying pregnant. I have had 7 chemical pregnancies in the past 18 months and one miscarriage at 9 weeks after using femara (you felt it was probably due to a respiratory virus I contrated around 6 weeks). I tested positive for MTHFR mutation heterozygous but also this didn't appear to be the issue.

I guess I have a 2 part question for you. The first would be related to causes of chemical pregnancies. My progesterone levels have been on the low side of normal (even during the pregnancy that ended in miscarrige) and I really thought that was the cause. I was placed on 50 mg suppositories 2 months ago and I did get a positive result this month (8 DPO Hcg 12, progesterone 18.8, took femara and progesterone) but my HCG level was back to <5 on 10 DPO.

Are there other implantation issues that could be my problem besides chromosomal abnormalities and low progesterone that lead to a pregnancy not progressing? I know I shouldn't test early, but I was trying to establish if low progesterone levels were the cause of my losses.

Part 2: is it possible to just have an underlying HCG level that elevates above 5 regularly, and if so, what would that signify? As you may remember, my old RE wrote off the HCG values as me eating too much cereal and developing an antibody to HCG that triggers pregnancy tests. I will be visiting a new RE soon and want to be sure to ask the right questions and supply the best information.Thank you very much for all of your insight and for volunteering your services. Merry Christmas!

Answer:
Hello K. from the U.S. (New York),

Let me take the second question first since it is the easier of the two to answer. The answer is NO, you can't have an underlying HCG level from cereal or any other source other than pregnancy. Serum pregnancy tests are very sensitive and testing for the beta subtype (bHCG), so there is no cross reaction even if the cows you were using the milk from were given hormones for some reason (I presume that is what your old RE was thinking as a source. A little far fetched if you ask me).

In terms of your chemical pregnancies, that is a difficult problem to answer. If you have already undergone a complete recurrent miscarriage evaluation (hormones, infectious diseases, anatomical, genetic, immunologic) then we may not have the technology to find the exact cause. However, the hormonal is easy to check through blood tests, and I automatically place my patients on progesterone supplementation just in case; anatomical testing would take an ultrasound and hysteroscopy, again an easy test; and infectious diseases and genetic are also easy to test. The only one that is difficult and not completely understood is the immunologic component. Many authorities have looked into many different immune factors.

If you look at a website by Reproductive Immunology Associates, who have made a practice of the immunologic causes of miscarriage, you will see lots of different test that they recommend. Because this component is so difficult to define, experts have conflicting opinions.

If you were my patient, I would put you on a protocol that I use and, for the most part, have been successful with. It involves taking aspirin 81 mg per day starting at the beginning of the cycle, medrol (prednisone) 16 mg per day taken from the beginning of the cycle then decreasing to 8 mg after ovulation, progesterone vaginal suppositories beginning after ovulation and, finally, heparin 2000 units twice per day subcutaneously beginning at the start of the cycle. The aspirin, medrol and heparin treat for subclinical immunologic problems and the aspirin and heparin also help to increase blood flow at the microvascular level at the implantation.

Good Luck & Merry Christmas to you too :) ,

Dr. Edward J. Ramirez, M.D., FACOG
Executive Medical Director
The Fertility and Gynecology Center
Monterey Bay IVF Program
http://www.montereybayivf.com/
Monterey, California, U.S.A.

Comment: Thank you SO much for your opinion. I will definitely have to look into these additional things. Glad to hear that I am doing all that I can do on my own and that I am advocating for the right things. It makes a HUGE difference when you have an idea what direction you should be headed so that you can work with a doctor to get there. Merry Christmas!

Thursday, August 18, 2011

Secondary Infertility Patient With Seven Miscarriages: Cannot Afford IVF


Question:

Hello-I am 33 and have a healthy 3 1/2 year old daughter who was conceived naturally. I have had 7 miscarriages (1 before my daughter and 6 consecutive since her birth). I have had 4 chemicals, 2 confirmed blighted ovums and 1 xxx69..this one had a heartbeat and all hormones were great, heart stopped at 8 weeks and did a karyotype on fetal tissue.

I've been to an RE and have had the following tests: Karyotype, HSG, Day 3 Hormone Panel, Clotting Disorder Panel, ultrasound to measure lining of uterus and to check for any abnormalities...all results are "normal". I have also supplemented with progesterone after a positive pregnancy test as well, my LP is usually 11-12 days. My hubby has only had a karyotype and he is "normal" as well. The RE said that our XXX69 was more than likely due to a mutated sperm containing an entire extra set of chromosomes. He has recommended we do IVF (in vitro fertilization) with PGD (pre genetic determination).

Our insurance doesn't cover ANY fertility, so that is really not an option for us.The RE wanted to me to try a monitored clomid cycle as a plan "B". In doing some research, I just don't think clomid will help with unknown recurrent pregnancy loss...what is your opinion? I "O" just fine without any meds. What else would you recommend? I am in excellent shape, eat organic whole foods, don't consume any alcohol or caffeine..

I take prenatals and fish oil daily. Do you think that all my miscarriages could be a sperm issue? I'm really at a loss....what do you think our chances are of having another healthy child without doing IVF/PGD? Thanks, S. from Maryland.

Answer:

Hello S. from Maryland,

I am sorry for your losses. You certainly have recurrent abortion as a diagnosis, but the exact cause is unknown. Granted that the fetal tissue from the last miscarriage showed a genetic abnormality, but if your husband's genetic testing was normal, then I would not expect that all the miscarriages were for the same reason. I would think that it is more likely to be a spontaneous genetic abnormality occurring with division of the embryo. Hopefully that is the case because that means that there is still a good chance of having a normal pregnancy. If the problem is a sperm abnormality causing a genetic problem, then there is very little that can be done to change that other than using donor sperm.

One alternative would be to try IUI (intra uterine insemination), since the sperm will be washed and the best sperm will be made available for fertilization. There is no guarantee with this but it is an option. Your RE is correct in that the only way to make sure that a normal embryo is available for implantation is to do preimplantation genetic screening with IVF. Since you cannot do IVF, then the only option is to continue to try and hope/pray for the best. I do not think you need to do Clomid either. It doesn't help with this problem. The good thing is that you are still young and have time to keep trying. Hopefully with continued trying, you will be successful.

If you were my patient, I think I would add low dose aspirin 81mg per day, PNV with folic acid, Medrol 16 mg per day, progesterone supplementation in the luteal phase (Crinone or Endometrin) and low dose heparin 2000 unit injections twice per day with each cycle. These are more to cover the immunologic causes of miscarriage, but have been shown in numerous studies to help. Since we cannot be sure exactly why the previous miscarriages occurred and can't conclude that it is ONLY a genetic problem, I would favor covering those bases.

Good Luck,

Dr. Edward J. Ramirez, M.D., FACOG
Executive Medical Director
The Fertility and Gynecology Center
Monterey Bay IVF Program
http://www.montereybayivf.com/
Monterey, California, U.S.A.

Monday, February 15, 2010

33 Yr. Old Low Responder Trying For A 5th IVF Cycle, One Stillbirth But Not Ready For Donor Eggs Yet


Question:

Dear Dr. Ramirez:

I've just recently gone through my 5th IVF Cycle. Yesterday at retrieval they got 11 eggs but said that 6 of them were empty. The embryologist called today to say that none of the eggs fertilized and they are not sure what is going on. To give you a brief synopsis of my history:I'm 33, my husband is 46. We have been together for 6+ years. I was first diagnosed with blocked tubes back in 2005. I had bilateral tubal repair which successfully opened both tubes. Since I did not get pregnant we moved to IUI, which most of those got cancelled due to relationship difficulties. In 2008 I had a chemical pregnancy using donor sperm. My RE didn't count it because my AF started the next day after the beta. We then found out that my husband had a low sperm count. He was not tested prior to this because he has a child from a previous relationship years ago.

We did our first IVF in May 2008 with the transfer of 3 day 3 embryos. I conceived on this first attempt. However, my son was stillborn when I was 25 weeks along. We don't know the reason why because an autopsy was not performed. All I know is that I had an amnio at about 19 weeks and things were never quite the same after that. After meeting with my RE a month later he said we could try again soon because I have a high FSH which normally measures around 10 or so. The last two cycles my FSH was 9.9 and 8.8. We have done 4 IVF cycles in 2009 and all have failed.

1/09--bcp for 1 week, lupron, follistim 450, and menopur 150. 5 Eggs retrieved, 3 fertilized only one made it to day 3 transfer. Result=BFN3/09--same protocal as above, retrieved around the same amount of eggs but none fertilized.

4/09--bcp, follistim 450, menopur 150, and ganirelix towards the end of stimulation. 7 eggs retrieved, 5 were mature, 4 fertilized, and 2 made it to day 5 transfer. My RE said the day 5 transfer was of morulas (by day 5 they should be blastocyst so they were lagging behind in thier development). Result=BFN. My RE did a hysterosonogram and indicated that my uterus looks fine.

6/09--At this point we've decided to go for a 5th try, although it is now out of pocket as I've maxed out on insurance benefits for IVF. This time around my RE starts me on stimulation day 2 of my cycle with 450 follistim, and 150 menopur. No suppression. I produced more follicles than in my previous cycles. What puzzles me is that as of last Friday I had 16 follicles measuring between 14mm - 18mm and a few that were below 12mm and a few that were less than 10mm. When they did the retrieval yesterday I was a bit surprised that they only got 11 and then more than half of those were empty. The trigger shot I take is two shots of Ovidrel, one on each side. The first cycle when I got pregnant the trigger I took was Novidrel in the butt.

During all of this, after I lost my son with the stillbirth last year, the only person that did any thorough testing on me was my hematologist to find a clue as to what happened. In May 2009 he did an entire work up and discovered I had a Protein S deficiency and something else that may cause my blood to clot along with a positive PPA which he indicated could cause congestive heart failure in a fetus. His recommendation to my RE was that I should be on 81mg of baby aspirin daily and once I conceive I should be placed on Lovenox. Of course this didn't seem like a big deal of concern to my RE. His take is lets get you pregnant first.

My question is, given what I've described above, is there any change in protocol that would be recommended? I'm 33 and not ready for donor eggs but can't afford the cost of more failed cycles. Are there questions I should be asking my RE that I'm not focusing on?

Answer:

Hello,

Boy, you have gone through quite an ordeal, and I'm sorry to hear it. At least you know that you can get pregnant. Despite the fact that you are a poor responder (high FSH), your chances should still be good at your age. I am very surprised that it has failed so many times.

The stimulation protocol that you used recently (Follistim 450/Menopur 150) is my highest protocol as well. I use ganerelix (GnRH antagonist) for 1-3 days prior to retrieval to prevent spontaneous ovulation. I also use Ovidrel to trigger (only 1 shot however). Your stimulation was very good. I am very shocked that there were "empty" eggs. I presumed that meant empty cumulus, not eggs. That is something that we usually only see in Older patients (over 40). That is highly suspicious.

My protocol for patients that fail two IVF cycle is to add the following:

1. Aspirin 81 mg daily beginning at the start of the cycle continue through the pregnancy.

2. Low Dose heparin 2000 units twice per day or Lovenox 30 mg per day starting at the beginning of the cycle. Continue until 10 weeks pregnancy.

3. Medrol 16 mg per day until embryo transfer then decrease to 8 mg per day until the pregnancy test then stop.

4. Both injectable progesterone 50 mg per day beginning after the retrieval and vaginal Endometrin 100 mg vaginally twice per day beginning after the transfer.

I NEVER take low responder patients to blastocyst. I do not believe the blastocyst culturing is perfected and there is still a high embryo loss rate. I only take high responder young patients to blastocyst to decrease the number of embryos to choose from. In most cases, I transfer at day 3.

I don't know if your RE will accept some of these things because they are not well established in studies. But when my patients fail, I pull out all the plugs. The medications are not harmful or dangerous and can only help. The aspirin, heparin and medrol help to decrease the immune response AND decrease the micro clot formation in the early blood vessels going to the implantation site.

Despite all the IVF cycles you have done, at your age I would still want you to continue to try, but certainly donor eggs would be the next option. If you have implantation failure, however, and don't use the above protocol, then even donor eggs might fail. One other option would be to consider trying a different clinic because success rates are highly variable among clinics and doctors within a clinic.

I hope this helps,

Edward J. Ramirez, M.D., FACOG
Executive Medical Director
The Fertility and Gynecology Center
Monterey Bay IVF Program
www.montereybayivf.com

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