Pregnancy Test Sticks Midstream Early 99% Accuracy 10mlU HCG Urine Testing Kit

HOW DO THESE PREGNANCY TESTS WORK?. WHEN SHOULD I USE THE PREGNANCY TEST?. The further in to the pregnancy you are the higher the levels of HCG in your urine. Place the pregnancy test stick vertically (straight) into the urine sample for at least 10 seconds, making sure the arrows are pointing downwards.

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