Hair must be freshly washed, clean and dry within 12 hours of the test.
No hair products in your hair. Do not braid your hair.
You must eat within 2 hours of your appointment. For example, if your appointment is at 9 am, please eat between 7 am and 9 am. If your appointment is later in the day, please eat a snack before your appointment.
DO NOT drink / eat any caffeine the day of your test (coffee, tea, chocolate, soda, etc.)
DO NOT SLEEP MORE THAN 4–6 HOURS THE NIGHT PRIOR TO YOUR TEST
