Urine testing for illegal drugs starts with an immunoassay using monoclonal antibodies; a positive result is then confirmed by gas chromatography/mass spectrometry on a second sample.
Urine testing for illegal drugs involves an initial immunoassay using monoclonal antibodies; if positive, a second sample is confirmed using gas chromatography/mass spectrometry.
| Front | Describe how urine testing is used to see if someone has taken illegal drugs. |
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| Back | Testing for illegal drugs:
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