Fertility Test (Large)

About this test

How It Works

You collect a small blood sample at home using a finger-prick method. The sample is then sent to a CLIA-certified laboratory for analysis, and your results are delivered digitally once testing is complete.

Dried Blood Spot (DBS) Collection

The test uses a dried blood spot (DBS) sample. A few drops of blood are collected from your fingertip and placed on a collection card, which is then left to dry before being sent to the laboratory.

This method is widely used and offers a convenient alternative to traditional blood sampling.

Preparation Instructions

Collect your sample in the morning.

For those with a regular menstrual cycle, it is recommended to collect the sample between days 2–5 of the cycle (with day 1 being the first day of menstruation).

Avoid strenuous exercise prior to testing, as this may influence results.

Who Should Consider This Test

This test is relevant for individuals who want a comprehensive hormone test for women, covering reproductive hormones, thyroid function, and stress-related hormones.

It may be particularly useful when exploring fertility hormones, irregular menstrual cycles, or symptoms associated with hormone imbalance. The test can also provide insight when assessing changes related to perimenopause, energy levels, or stress-related hormone patterns.

Understanding CLIA Certification

Your sample is analyzed in a CLIA-certified laboratory, ensuring that testing is performed according to established U.S. quality standards using validated methods.

Biomarkers included

• TSH: Thyroid-Stimulating Hormone (TSH), also known as thyrotropin, is a hormone produced by the pituitary gland. It plays a crucial role in regulating thyroid function by stimulating the thyroid gland to produce and release thyroid hormones (T3 and T4), which are vital for metabolism, growth, and development. Measuring TSH levels is a primary way to assess thyroid gland activity and diagnose thyroid di
• FSH (Follicle-Stimulating Hormone): Follicle-stimulating hormone (FSH) is produced by the pituitary gland and plays an important role in reproductive function in both women and men. In women, FSH helps stimulate the growth and maturation of ovarian follicles and varies across the menstrual cycle. In men, FSH supports sperm production through its action on Sertoli cells in the testes. Measuring FSH can help assess fertility and ovari
• Prolactin: Prolactin is a hormone primarily produced by the pituitary gland, best known for its role in stimulating milk production (lactation) after childbirth. It's important because abnormal levels can indicate various health issues, including pituitary tumors, infertility, and menstrual irregularities in women, or erectile dysfunction and decreased libido in men.
• Anti-Müllerian Hormone (AMH): Anti-Müllerian Hormone (AMH) is a hormone produced by the ovaries that indicates a woman’s ovarian reserve, reflecting the number of eggs remaining. It is commonly used to assess fertility potential and is an important marker in reproductive medicine.
• Free Triiodothyronine (fT3): Free Triiodothyronine (fT3) is the unbound, active form of the thyroid hormone triiodothyronine (T3). It is crucial for regulating metabolism, energy levels, body temperature, and heart function. Measuring fT3 provides a direct assessment of the biologically active thyroid hormone available to tissues, reflecting current thyroid function more accurately than total T3 in many cases.
• Estradiol (E2): Estradiol is the most biologically active form of estrogen in the body. It plays a central role in reproductive health, regulating the menstrual cycle, ovulation, and fertility. Estradiol also affects bone density, cardiovascular health, brain function, and metabolism. Levels vary throughout the menstrual cycle and across different life stages such as puberty, pregnancy, and menopause. Measuring e
• DHEA-S: DHEA-S is a hormone produced mainly by the adrenal glands and serves as a precursor to sex hormones, including androgens and estrogens. Compared with DHEA, DHEA-S is more stable in the bloodstream and is therefore commonly measured to evaluate adrenal androgen production. Levels typically peak in early adulthood and gradually decline with age. Elevated DHEA-S may be seen in conditions associated w
• Progesterone: Progesterone is a female sex hormone primarily produced by the ovaries after ovulation and by the placenta during pregnancy. It plays a crucial role in preparing the uterus for pregnancy, maintaining pregnancy, and regulating the menstrual cycle. Progesterone levels naturally fluctuate throughout the menstrual cycle. Low levels can lead to irregular periods, difficulty conceiving, or complications
• Cortisol: Cortisol is a steroid hormone produced by the adrenal glands, known as the body's primary stress hormone. It plays a crucial role in regulating metabolism, immune response, and blood pressure, making its levels important for assessing stress response and adrenal function.
• Free Thyroxine (fT4): Free Thyroxine (fT4) is the unbound, active form of the thyroid hormone thyroxine in the bloodstream. It's crucial for assessing thyroid function because it directly reflects the amount of hormone available to regulate metabolism, growth, and energy levels. Measuring fT4 helps diagnose and monitor conditions like hyperthyroidism (too much) or hypothyroidism (too little) thyroid hormone.
• Luteinizing Hormone (LH): Luteinizing Hormone (LH) is a key hormone produced by the pituitary gland that plays a crucial role in reproduction. In women, it triggers ovulation and stimulates the corpus luteum to produce progesterone. In men, LH stimulates the Leydig cells in the testes to produce testosterone, which is essential for sperm production and male characteristics.

How to prepare

Fast for 8-12 hours before collection. Collect sample in the morning, ideally within 30 minutes of waking. For menstruating women, sample on Day 3 of your cycle.

Frequently asked questions

What is the best day of my cycle to take this test?

Timing is crucial for accurate sex hormone measurements. If you have a regular cycle, collection is recommended on Day 3 of your menstrual cycle (Day 1 is the first day of your period). Progesterone is ideally tested on Day 21. If you do not have a regular period or are in menopause, you may collect your sample on any day of the month.

How accurate is a finger-prick test compared to a doctor's office blood draw?

Studies show that Dried Blood Spot (DBS) collection is highly correlated with traditional venous blood draws for steroid and thyroid hormones. Our partner labs use the same clinical-grade diagnostic equipment found in hospitals to ensure your results are reliable and accurate.

Does hormonal birth control affect my results?

Hormonal birth control (pills, patches, or rings) suppresses the natural production of hormones like FSH, LH, and Estradiol. While you can still perform the test, the results will reflect the influence of the medication rather than your natural baseline. We recommend consulting with your healthcare provider if you wish to test your natural levels after discontinuing birth control.

Customer reviews

4.8/5 (5)

• 5/5 — Love the combination of biomarkers!
• 4/5 — Glad I did this before my next doctor's visit, though the finger prick took a couple of tries. Results were very detailed.
• 5/5 — Fast delivery, easy to use!
• 5/5 — Easy to follow instructions and got my results in exactly six days.
• 5/5 — The AMH data was exactly what I needed for my fertility planning.