If you’re reading this, it’s likely that you have been trying to get pregnant but have not yet met with success. Lucky for you, you can do some investigating on your own with an assortment of home tests to help you figure out why, and some to help you improve your conception odds. There are tests for ovarian reserve and kits to identify sperm in the ejaculate. There are kits designed to increase the likelihood of success—including urine tests to determine when you are ovulating.
There are, however, a number of situations where an appointment with your gynecologist or a reproductive endocrinologist would save you time and, ultimately, money. This would apply to women who are 35 years of age or older; women who have been trying to become pregnant for 6 months; and couples that have been pregnant before. Women with irregular cycles, a history of endometriosis or pelvic surgery, should not “try at home” for any significant time period, prior to seeking medical consultation. In addition, those men with a history of testicular injury, surgery or other problems, should not delay evaluation.
Predicting Ovulation
Pinpointing the time of ovulation enhances the likelihood of conception. There are several at-home tests that help determine when ovulation will occur.
Ovulation predictor kits (OPK) measure luteinizing hormone (LH) levels in the urine. LH is a hormone produced and secreted by a small gland in the brain (pituitary) that, when present at high levels, directs the ovary to complete the maturation and release of the egg. The LH in the urine will be elevated prior to ovulation. The urine test strip will turn color (or generate a smiley face) after being exposed to urine with high LH levels. This positive result suggests that ovulation will occur in 18-40 hours. Sexual activity, or other means of exposure to sperm, should occur on the day of, and the day after, the OPK is positive. There does not appear to be significant difference in outcome with the available products.
It is typically best to test in the afternoon and at approximately the same time everyday. Testing should begin 2-3 days prior to the earliest anticipated time of ovulation, which occurs approximately 14 days prior to the next menses. As an example, testing should begin on day 10 if your cycle occurs every 26-29 days. Women, such as some with polycystic ovarian syndrome (PCOS), who have baseline high LH levels, may have a positive OPK without ovulation (false positive). Women taking clomiphene citrate (Clomid) should not test until 3 days after the last pill, as the initial hormonal response to the medication can create a false positive result.
There are now more advanced kits that include a monitor to identify your peak fertility. These systems integrate information about your cycle length with results from the urine test strips. The monitors are quite expensive, and add little to counting your cycle length using just the test strips.
Mucus Tests
The nature of cervical mucus changes during the menstrual cycle. It is thick prior to and after ovulation, but becomes thin and watery around the time of ovulation, to allow the sperm to pass through the cervix. Women can assess the quality of the cervical mucus to help identify the approximate time of ovulation. This can be done by taking the mucus from the vagina and stretching it between the thumb and another finger. Mucus that is receptive to sperm will stretch for at least 2 inches.
Saliva changes in response to the hormonal changes of the menstrual cycle, at the same time that the cervical mucus thins. Some kits use a microscope to identify the changes that occur in the saliva prior to ovulation. This is done by taking a sample of saliva and looking for the fern-like patterns that happen as a result of the increase in estrogen that occurs prior to ovulation. Other tests measure the changes in the electrolyte concentration in the saliva (or cervical mucus) that appear prior to ovulation. These tests use electronic monitors placed in the mouth (or the vagina) to obtain a reading. Finally, there is a fertility watch that works on a similar principle. It is worn on the wrist and measures changes in electrolyte concentration in the perspiration.
The at-home tests to assess changes in the cervical mucus, saliva or perspiration are cumbersome, often expensive and less precise than the urine test strips. |
Assessing Ovarian Reserve
Knowing how many good quality eggs remain in the ovaries would be helpful in predicting the likelihood of conception, and directing the course of treatment. There are tests available to help answer this question; that is, to assess ovarian reserve. One such test measures follicle stimulating hormone (FSH) on, or about, menstrual cycle day 3.
FSH is released from the pituitary to stimulate the maturation of the eggs. As the number and quality of eggs in the ovaries decline, the FSH often elevates. Women with an elevated FSH have a reduced likelihood of getting pregnant.
Recently, an at-home urine test to assess ovarian reserve (Fertell) has become available. The test measures FSH. There are other FSH test strips available, but the other products detect only very high levels of FSH and should not be used in assessing fertility. When using Fertell, testing should be performed on the third day of the cycle, with the first morning urine. If the test line is the same color or darker than the test line, the result is abnormal and ovarian reserve is reduced.
Unfortunately, having a normal FSH on day 3 does not ensure that the ovarian reserve is normal. This is the biggest shortcoming of using FSH, or any other test, as a measure of ovarian reserve. The caveat in using the at-home test, particularly for women in their late 30’s or 40’s, is that a normal result does not mean that the user has plenty of time to try at home without further evaluation or treatment.
Sperm Tests
Despite advances in technology, no pregnancy can be conceived without sperm. The presence of an ejaculate does not mean that sperm are present, or that they are motile. There are a few at-home tests to evaluate the semen.
Some of the tests rely on a microscope to evaluate the ejaculate. They come with a microscope and instructions. The microscope allows for direct visualization of the sperm, which allows for evaluation of sperm appearance (morphology). Performing the home semen analysis requires time, patience and practice for the results to be truly meaningful. These kits can also be quite expensive and are generally not worth the investment.
There are other tests that use a more simple approach, which is similar to the LH and FSH test strips. One such kit is called BabyStart. After a semen sample is collected, it is placed in wells with a special test solution. If the count is normal, a color change occurs. The test is easy and inexpensive, but provides no information about sperm motility or morphology. Another kit (Fertell) also provides information by using a chemical reaction to cause a color change. This kit requires the sperm to be motile to cause a color change and, hence, provides additional information. It is also more expensive.
Many of these at-home tests can be helpful in facilitating conception, particularly the OPK. The diagnostic tests (screening for FSH and sperm) can be helpful in screening for problems. However, they should not be used to replace more extensive testing and interpretation by your health care provider.
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A graduate of Yale University School of Medicine, Dr Guttman is one of only approximately 800 physicians in the country who is board certified in obstetrics and gynecology and in reproductive endocrinology. She has published numerous articles on infertility, polycystic ovarian syndrome, assisted reproductive technology, and complementary and alternative medicine in infertility. Dr Guttman has held numerous leadership positions in local and national professional organizations, and is on the medical advisory boards of several patient advocacy groups. Dr Guttman is Clinical Associate Professor at Thomas Jefferson University and a physician at Northern Fertility and Reproductive Associates in Philadelphia, PA. |
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