Blood Draw Preparation Instructions for Journeys Panels at Quest Labs

Written By HeatherHuntDC

Please schedule all lab draws before 8:30 am. The draw needs to take place before 9am for the morning cortisol test.

Fasting Requirements

Fasting means that, with the exception of water, you refrain from eating or drinking for a minimum of 8 hours (ideally 10–12 hours) prior to your blood draw.

  • Water is encouraged

  • No coffee or tea

  • You may take most medications and supplements unless otherwise instructed below

Morning of Test: Please HYDRATE the morning of the test. No tea or coffee, but lots of water.  You may take most medications and supplements unless otherwise instructed below. 

Special Instructions by Lab Type

Thyroid Panels

  • You may take your thyroid medication as prescribed

  • Do NOT take any Vitamin B supplements for 3 days prior to testing

Sex Hormone Panels

  • Do NOT use progesterone for 24 hours prior to your lab draw

  • For menstruating women:

    • Complete labs on days 17–24 of your cycle

    • (Day 1 = first day of bleeding)

Cortisol Testing

  • This test is NOT fasting

  • Do NOT drink coffee or tea the morning of your test

  • Blood draw should be completed before 9:00 AM

HeatherHuntDC
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