How does an immunoassay test detect drug classes?

Immunoassay. The IA drug test uses antibodies to detect the presence of selected drugs and/or their metabolites based on a predetermined cutoff threshold. 8 Immunoassay monitoring is the initial qualitative test to identify the presence of drug classes in the urine based on a detection threshold.

What does a positive presumptive drug test indicate?

A presumptive positive result for any of the tested drugs indicates the possible presence of the drug or metabolites in the urine, but does not measure the level of intoxication.

What does EIA mean in a drug test?

enzyme immunoassay
Screening tests are performed by immunochromatographic or lateral flow assay, or by an enzyme immunoassay (EIA or ELISA), a biochemical method for detecting the presence of drugs of abuse in a biological sample.

Will Quest Diagnostics call if I fail a Drug test?

Will Quest Diagnostics Call If I Fail A Drug Test? No, Quest Diagnostics will not call you if you fail a drug test if your employer ordered it. The employer will inform you about your drug test results.

What is the difference between presumptive and definitive Drug test?

A presumptive drug test may be followed with a definitive drug test in order to identify specific drugs or metabolites. Definitive drug tests are qualitative or quantitative tests used to identify specific drugs, specific drug concentrations, and associated metabolites.

What is a immunoassay urine test?

Immunoassay tests use antibodies to detect the presence of drugs. These tests can be processed rapidly, are inexpensive, and are the preferred initial test for screening. 10 The most commonly ordered drug screens are for cocaine metabolites, amphetamines, phencyclidine, marijuana metabolites, and opiate metabolites.

What does enzyme immunoassay detect?

Enzyme linked immunosorbent assays (ELISA), also known as enzyme immunoassays (EIA), are tests designed to detect antigens or antibodies by producing an enzyme triggered color change. All of the EIAs performed in the Diagnostic Serology Section are known as solid-phase assays.