How Do They Do a Fertility Test

Fertility testing is a crucial step for couples or individuals who are concerned about their reproductive capabilities or experiencing difficulties in conceiving. It involves a series of examinations and tests that help to assess the various factors contributing to fertility. Understanding how these tests are conducted can demystify the process and enable those seeking answers to make more informed decisions. This article will explore the different methods and procedures involved in a comprehensive fertility test.

Female Fertility Testing

Medical History and Physical Examination

Personal and Family Medical History: The doctor will start by gathering a detailed personal medical history, including any past gynecological surgeries, menstrual cycle regularity, history of sexually transmitted infections (STIs), and use of hormonal contraceptives. Family history is also important as certain genetic conditions like cystic fibrosis or chromosomal abnormalities can affect fertility. For example, if a woman has a sister with early menopause, it might indicate a potential genetic predisposition.

Pelvic Examination: A pelvic exam is performed to assess the health of the reproductive organs. The doctor will check the size, shape, and position of the uterus and ovaries. They may also look for any signs of infection, cysts, or fibroids. This is usually a simple and relatively painless procedure where the doctor inserts a speculum into the vagina to visualize the cervix and then uses their fingers to feel the pelvic organs.

Hormone Testing

Follicle-Stimulating Hormone (FSH) and Luteinizing Hormone (LH): Blood tests are done to measure FSH and LH levels. FSH stimulates the growth of ovarian follicles, and LH triggers ovulation. Abnormal levels of these hormones can indicate problems with the ovaries or the pituitary gland. For instance, a high FSH level in a woman’s early thirties might suggest diminished ovarian reserve.

Estrogen and Progesterone: Estrogen is essential for the development of the uterine lining, and progesterone helps maintain it. Measuring these hormones can give an idea of the ovulatory function and the quality of the uterine environment. Low progesterone levels may lead to difficulties in implantation or maintaining a pregnancy.

Thyroid Hormones: Thyroid function can impact fertility. Tests for thyroid-stimulating hormone (TSH), thyroxine (T4), and triiodothyronine (T3) are often included. An overactive or underactive thyroid can disrupt the menstrual cycle and ovulation. For example, an elevated TSH level may indicate hypothyroidism, which can cause irregular periods.

Ovarian Reserve Testing

Antral Follicle Count: This is an ultrasound test that counts the number of small follicles in the ovaries. These follicles contain the eggs. A lower number of antral follicles may suggest a reduced ovarian reserve and a lower likelihood of successful conception. For example, if a woman in her mid-thirties has only a few antral follicles, it could mean that her ovarian function is declining.

Anti-Mullerian Hormone (AMH) Test: AMH is produced by the cells in the ovarian follicles. The level of AMH in the blood can give an indication of the number of remaining eggs. A decreasing AMH level over time is associated with a diminishing ovarian reserve. It helps doctors predict a woman’s response to fertility treatments like in vitro fertilization (IVF).

Ovulation Testing

Basal Body Temperature (BBT) Charting: The woman measures her basal body temperature (usually taken first thing in the morning before getting out of bed) throughout her menstrual cycle. A slight increase in temperature indicates that ovulation has occurred. This method helps to determine if and when ovulation is happening regularly. For example, if the BBT does not show a consistent pattern of increase, it may suggest anovulation.

Ovulation Predictor Kits: These kits detect the surge in luteinizing hormone (LH) that occurs about 24 – 36 hours before ovulation. The woman urinates on a test strip, and if a certain level of LH is detected, it signals that ovulation is likely to occur soon. This can help time intercourse for optimal chances of conception.

Ultrasound Monitoring: Transvaginal ultrasounds can be used to monitor the growth and development of ovarian follicles. The doctor can track the size and number of follicles and predict when ovulation will take place. This is a more accurate but also more invasive method compared to BBT charting and ovulation predictor kits.

Uterine and Fallopian Tube Evaluation

Hysterosalpingogram (HSG): This is an X-ray procedure where a contrast dye is injected into the uterus and fallopian tubes. It helps to visualize the shape and structure of the uterus and check for any blockages or abnormalities in the fallopian tubes. For example, if the dye does not flow freely through the tubes, it may indicate a blockage that could prevent the sperm from reaching the egg or the fertilized egg from reaching the uterus.

Sonohysterogram: Similar to an HSG, but instead of using X-rays, a saline solution is injected into the uterus, and an ultrasound is used to create images. It can detect uterine polyps, fibroids, or other intrauterine abnormalities. This procedure is often preferred as it does not involve radiation exposure.

Laparoscopy: In some cases, a laparoscopy may be performed. This is a surgical procedure where a small camera is inserted through a small incision in the abdomen. It allows the doctor to directly visualize the ovaries, fallopian tubes, and uterus and check for any adhesions, endometriosis, or other pelvic conditions that could affect fertility.

Male Fertility Testing

Medical History and Physical Examination

Personal and Family Medical History: The doctor will ask about any past testicular injuries, surgeries, history of STIs, and use of medications or drugs that could affect fertility. Family history of male infertility or genetic disorders like Klinefelter syndrome is also relevant. For example, if a man has a brother with infertility issues, it might raise concerns about a possible genetic cause.

Genital Examination: A physical examination of the genital area is done. The doctor will check the size and consistency of the testicles, the presence of any varicoceles (enlarged veins in the scrotum), or other abnormalities. Varicoceles can increase testicular temperature and affect sperm production.

Semen Analysis

Sample Collection: The man is required to provide a semen sample, usually by masturbation into a clean container. It is important to follow the instructions carefully, such as abstaining from ejaculation for a certain period (usually 2 – 3 days) before the test to get an accurate result.

Analysis Parameters: The semen sample is then analyzed in the laboratory. Parameters such as sperm count (the number of sperm per milliliter of semen), sperm motility (the ability of sperm to move forward), sperm morphology (the shape and structure of sperm), and semen volume are measured. A low sperm count, poor motility, or abnormal morphology can all contribute to male infertility. For example, if the sperm count is less than 15 million per milliliter, it is considered below normal.

Hormone Testing

Testosterone, FSH, and LH: Blood tests are done to measure testosterone, FSH, and LH levels in men. Testosterone is crucial for sperm production, and FSH and LH regulate the function of the testicles. Abnormal levels of these hormones can indicate problems with the testicles or the pituitary gland. For instance, a low testosterone level may lead to reduced sperm production.

Prolactin: High levels of prolactin can suppress testosterone production and affect sperm production. So, a prolactin test is also sometimes included in male fertility testing.

Genetic Testing

Y-Chromosome Microdeletions: In some cases of severe male infertility, genetic testing for Y-chromosome microdeletions may be done. These deletions can affect the production of sperm. For example, if a man has a deletion in a specific region of the Y-chromosome, it may lead to azoospermia (no sperm in the semen) or severe oligospermia (very low sperm count).

Karyotyping: This test analyzes the chromosomes in a man’s cells to check for any chromosomal abnormalities. Conditions like Klinefelter syndrome (an extra X chromosome) can cause infertility. Karyotyping can help identify such genetic issues.

Post-Test Consultation and Next Steps

Interpretation of Results

Female Results: The doctor will review the results of all the female fertility tests and explain what they mean. For example, if the ovarian reserve is low, the doctor will discuss the implications for natural conception and the potential options for fertility treatments like IVF. If there is a blockage in the fallopian tubes, the doctor will explain the possible causes and the available treatment methods, such as tubal surgery or IVF.

Male Results: Similarly, for male results, the doctor will discuss the significance of any abnormalities. If the semen analysis shows poor sperm quality, the doctor may recommend lifestyle changes (such as quitting smoking, reducing alcohol intake, and improving diet), further testing, or treatment options like sperm retrieval techniques for IVF.

Treatment Planning

Combined Treatment: If both male and female factors are contributing to infertility, a comprehensive treatment plan will be developed. This may include a combination of fertility medications for the woman, lifestyle changes and medical treatments for the man, and assisted reproductive technologies like IVF or intrauterine insemination (IUI).

Referrals: Depending on the results, the doctor may refer the couple to a specialist, such as a reproductive endocrinologist or a urologist. For example, if complex genetic issues are detected, a genetic counselor may be involved to provide more detailed information and guidance.

Conclusion