In blood test, why do you need to wipe off the first drop of the procedure?

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2007-10-28 12:25:58 · 4 answers · asked by Anonymous in Science & Mathematics ➔ Medicine

the area has been cleaned with alcohol or another cleanser, so that needs to be wiped away so that it doesnt contaminate the test.

2007-10-28 13:49:30 · answer #1 · answered by Anonymous · 0⤊ 0⤋

They need fresh blood. It's a technique pioneered by count Dracula in 1498.

2007-10-28 21:31:38 · answer #2 · answered by Anonymous · 0⤊ 1⤋

To eliminate any "tissue juice" that is in the first drop of blood.

2007-10-28 20:11:40 · answer #3 · answered by Howard H 7 · 1⤊ 0⤋

it might be dirty (contaminated) therefore it will give unclear answers

2007-10-28 19:29:01 · answer #4 · answered by Anonymous · 0⤊ 0⤋