Only take this test once any symptoms of short-term illness have resolved. Avoid taking biotin supplements for at least two days before the test. If biotin has been prescribed, please consult your doctor before stopping it.

Drink plenty of water, around two to three full glasses, 1 to 2 hours before your test to stay well hydrated for better blood flow. While fasting isn’t required, try to avoid fatty foods for at least eight hours beforehand. Avoid coffee, tea, or energy drinks, and stick to water only.

Please note that following the instructions step by step is crucial, as not following them may lead to sample rejection.