Urine Testing

Question 1

Pregnancy

Answer 1

Human embryo implants 6 days after conception
Area that will develop into placenta produces hcg

Question 2

Pregnancy tests

Answer 2

Monoclonal antibodies that target hcg
Line 1 immobile antibodies bind w hcg/monoclonal antibody complex (positive)
Line 2 immobile antibodies bind w
hcg-monoclonal antibodies

Question 3

Anabolic steroids

Answer 3

Removed from blood in urine
Gas chromatography urine vaporised and spread out
Mass spectrometry separates ions identify specific substances

Question 4

Illegal drugs

Answer 4

Divided into 2
First sample tested using immunoassay mono anti
Second using gas chromo and mass spec