Fertil Steril. 1982 Mar;37(3):355-60. Related Articles,
The value of a single serum progesterone measurement in the
midluteal phase as a criterion of a potentially fertile
cycle ("ovulation") derived form treated and untreated
conception cycles.
Hull MG, Savage PE, Bromham DR, Ismail AA, Morris AF.
A single midluteal serum progesterone concentration was obtained in 212 untreated cycles in 113 infertile patients, including 138 cycles in 72 patients in whom tubal, seminal, and cervical causes of infertility had been excluded. There were 16 conception cycles in the latter group. In an extended study a total of 21 untreated singleton conception cycles have been observed with a mean progesterone value of 40.7 nmol/l (12.8 ng/ml), 95% confidence limits of 28 to 53 nmol/l (8.8 to 16.7 ng/ml), and a range of 27 to 53 nmol/l (8.5 to 16.7 ng/ml), which extended significantly above as well as below the conception range, indicating that there is an optimal range for fertility with both an upper and a lower limit. The lower limit is of greater practical importance; and, partly to allow for assay variation, we suggest it should be taken as 30 nmol/l (9.4 ng/ml). It provided a clinically reliable criterion of potential fertility ("ovulation") in related studies. Our findings in treated conception cycles suggest that a higher value may be needed after treatment with clomiphene or gonadotropins because of the contribution from other stimulated follicles.
Please click on the required question.
- 1 What is infertility?
- 2 How prevalent are infertility problems?
- 3 What are the main causes of infertility?
- 4 What are the objectives of our infertility investigations?
- 5 Have there been any noticeable changes in fertility requirements in recent years?
- 6 What is the effect of our age on fertility?
- 7 I smoke cigarettes. Can this have an effect on my fertility?
- 8 Does my weight influence fertility?
- 8A Obesity! How can I lose weight?
- 9 I have fibroids. Could these reduce my fertility?
- 10 I have been told that my womb has an abnormal shape and that was the way that I was born. Could this reduce my fertility?
- 11 I have endometriosis. Could this reduce my fertility?
- 12 I have been told that I have cervicitis or a cervical ectopy (erosion). Could this impair my fertility?
- 13 My doctor tells me that my womb is retroverted (tilts backwards). Could this reduce my fertility?
- 14 I have had an ectopic pregnancy. Does this affect my future fertility?
- 15 We are worried that we may have a fertility problem. What should we do?
- 16 How will our doctor be able to identify the cause of our infertility?
- 17 How can we tell if I am releasing my eggs (ovulating)?
- 18 Investigations have shown that I have a problem releasing my eggs (anovulation). What could be the cause of this?
- 19 How important are my Fallopian tubes in fertility?
- 20 How can we tell if my Fallopian tubes are functioning?
- 21a What are the causes of male factor infertility?
- 21 How can we assess male fertility?
- 22 What is the purpose of a post-coital test (PCT)?
- 23 We have had our infertility investigations and our problem remains unexplained. How can this be?
- 24 What are our chances of achieving a pregnancy?
- 25 Where can I obtain more information?
- 26 Could we have some recommended infertility support groups?
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This is the personal website of David A Viniker MD FRCOG, Consultant Obstetrician and Gynaecologist at Whipps Cross University Hospital, London - Specialist Interests - Reproductive Medicine including Infertility, PCOS, PMS, Menopause and HRT.
I do hope that you find the answers to your women's health questions in the patient information and medical advice provided.
