The test is done by taking a finger-prick blood sample from you, very similar to the way a diabetic tests themselves for blood sugar levels. Your finger will be cleaned with an antibacterial alcohol wipe first, and then we will prick the finger using a lancet. You will feel a little pinch and then the nurse will be able to take the blood sample. The first drop of blood will be wiped away and the second drop will be taken to be used for sampling.

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