We recommend that you fast (don’t eat) for 8 hours before collecting your blood sample, this is especially important for you to gain an accurate testosterone reading. The best time to complete your blood test is first thing in the morning before breakfast.

Make sure you take the test between Monday and Thursday and post your sample on the same day. Do not take your sample at the weekend or on a bank holiday, as this could cause a delay in receiving the sample at our lab.