Whoop Performance Health blood test

Preparation

1. Been ill? Wait a little

   Required

   Had a fever, an infection or a vaccination in the past 2 weeks? Wait with the draw until you are fully recovered. These values react to inflammation and would give a distorted picture.

2. Pause biotin

   Required

   Do you take a supplement with biotin (vitamin B8, common in hair, skin and nail supplements)? Stop it 72 hours before the draw. Biotin interferes with the measurement of these values.

3. No hard training beforehand

   Required

   No heavy training, long endurance sessions or anything that leaves you out of breath in the 72 hours before the draw. Normal walking is fine.

4. No alcohol beforehand

   Required

   Drink no alcohol in the 24 hours before the draw.

5. Come fasting

   Required

   From 22:00 the evening before, eat and drink nothing except water. That is at least 8 hours. Skip coffee, tea, chewing gum and smoking that morning. Plan the draw before 10:00.

6. Have the draw in the morning

   Required

   These values vary over the day and peak in the morning. Have your blood drawn before 10:00, ideally between 07:00 and 09:00.

7. On levothyroxine? Worth knowing

   Good to know

   Tell the staff at the draw when you took your tablet; for most values the timing makes no difference.

8. Do you have a cycle? Pick the right day

   Required

   If you have a menstrual cycle, count the first day of your period as day 1 and have the draw on day 2 to 5. On hormonal contraception, or without a cycle, any day works.

• Water is always fine. Drink as usual beforehand, it makes the draw easier.
• Take your usual medication, unless your own doctor told you otherwise.