Blood Spot Fertility Basic (Day 3 or 21)
ZRT Laboratory
Sample type: Bloodspot
Requires fasting: No
At home test
Details
Optimized testing for a day 3 or 21 cycle screening. This panel measures the ovarian reserve, hormonal axis, pituitary signaling, thyroid function, adrenal hormones, and prolactin. It screens for low fertility, menopause, andropause, and pituitary dysfunction.
- Cortisol
- Thyroid-Stimulating Hormone, Dried Blood Spot
- DHEA-S, Blood Spot
- Follicle Stimulating Hormone, Blood Spot
- Luteinizing Hormone, Blood Spot
- Anti-Mullerian Hormone, Blood Spot
- Prolactin, Blood Spot
Estimated days for results: Results should be available within 7 business days after samples are received at the lab.
This panel provides a foundational assessment of the ovaries and testicles, thyroid, pituitary, and adrenal influences on fertility. It looks at common factors that cause irregular cycles, ovulatory dysfunction, low testosterone, and unexplained infertility. Results should be interpreted in the context of menstrual cycle timing, age, symptoms, and clinical history.
AMH, LH and FSH evaluate the ovarian reserve, while LH and FSH assess communication between the pituitary gland and gonads that is necessary for optimal reproductive health. TSH assesses thyroid function, which plays a critical role in menstrual cycle regulation and pregnancy outcomes. Cortisol and DHEAs assess adrenal function and stress physiology, both of which can influence ovulation, hormone balance, and reproductive success. Prolactin is included as a common cause of hormone irregularities and infertility.
7 business days
Before You Start
3 Days Before Collection
2 Days Before Sample Collection
Day Before Sample Collection
Day of Collection
- Read the provided test collection instructions carefully.
- You have two options for when to collect your sample during your cycle. Note that Day 1 is the first day of full menstrual flow (not spotting).
- Option 1: Day 3 Collection (Follicular)
- Collect between days 2-4 as long as you are still experiencing menstrual flow.
- If you have shorter menstrual flow, collect on day 2.
- Option 2: Day 21 Collection (Luteal)
- Regular Cycles (your cycle is about the same length each month):
- Cycle length 23–26 days: Collect day 17, 18 or 19
- Cycle length 27–30 days: Collect day 21, 22 or 23
- Cycle length 31–34 days: Collect day 25, 26 or 27
- For longer or shorter cycles: Collect 5–7 days before the expected start date of your next period.
- Infrequent or Unpredictable Cycles: Collect any non-bleeding day.
- Regular Cycles (your cycle is about the same length each month):
- Option 1: Day 3 Collection (Follicular)
- Talk to your healthcare provider about collection timing if you are taking steriods.
- Collect your sample halfway between doses of these medications.
- Hormone patches
- Vaginal rings
- Hormone pellets
- Hormone injectables
3 Days Before Collection
- DO NOT use anti-aging/anti-wrinkle face creams.
- DO NOT take biotin/vitamin B7.
- DO NOT take 7-keto DHEA.
2 Days Before Sample Collection
- Stop applying topical hormones with your bare hands. Use latex gloves, an applicator, or a hormone-loaded syringe.
- Stop applying topical hormones on your face, lips, and neck.
Day Before Sample Collection
- If you use topical hormones, change your sheets, pillowcases, and hand towels the night before collection.
- DO NOT touch any surfaces that may be contaminated with topical hormones.
- Take any night oral, topical, troche, or sublingual hormones at least 12 hours before sample collection.
Day of Collection
- Collect your sample within one hour of waking.
State restrictions:
Patient can't order this test if they are located in Puerto Rico, or New York
