Famous What Is Being Detected In The Standard Home Pregnancy Test References. Mixing shampoo and water to form a soapy solution without frothing is tricky as the presence of froth can interfere with the results. Hcg is made in a.

One uses a urine sample, the other a sample of blood. In comparison, a urine pregnancy test done at home can detect hcg about a week after. A pregnancy test detects the pregnancy hormone hcg (human chorionic gonadotropin) in the blood or urine to determine if a woman is pregnant.