Multiple Choice
In a direct ELISA test to screen for drugs in a patientʹs urine, what is the third step in the test process?
A) enzyme-labeled antibodies against the drug being tested is added
B) substrate for the enzyme is added
C) antibody against the drug being tested is added
D) the patientʹs urine sample is diluted
Correct Answer:
Verified
Correct Answer:
Verified
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