Simple, step-by-step prep to help you get accurate results.
Functional Labs
Get ready for your labs with confidence
Schedule for accurate results
If you menstruate, schedule for about 7 days before your next period will start. If using birth control, go on day 3-5 of bleeding. If taking continuous birth control with no bleeding and no placebo pills, scheduling anytime is fine.
Pick a time that comfortably allows 8 hours of fasting.
3 Days Before
Stop taking all supplements. Some components may skew results. This does not include prescription medication.
2 Days Before
Avoid seafood. Seafood intake can affect heavy metal test results.
Night Before
Finish dinner, then fast for 8+ hours. You can only drink water until your appointment.
Morning of your appointment
Drink at least 1 liter of water. This lab draw will require 12–14 vials of blood, and hydrating makes your blood flow faster. Don’t worry, this is standard for comprehensive testing. Save your workout for after your labs.
When you get to the lab
Bring a copy of your lab request (printed or digital) and photo ID. If asked, your clinician's name is Dr. Dawn Johnson, and Parsley's fax number is (212) 596-7138. If you are getting your labs drawn in NY or NJ, you'll pay a lab fee of approximately $230 directly to the lab.
What to expect after your appointment
If there’s a result that requires immediate medical attention, you will be contacted directly by a clinician. You’ll get most of your results in 3-4 days. Some test results will take up to 15-20 days. Your dashboard will automatically update as we receive test results.
