?:definition
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Immunoassay reagents intended to perform qualitative and/or quantitative analyses on a body fluid sample (e.g., serum) to determine gamma-glutamyltransferase (GGT). GGT is a moderately sensitive and specific marker for long-term heavy alcohol consumption. In general, GGT is a worse marker than carbohydrate-deficient transferrin (CDT). The sensitivity of the test can be enhanced using CDT and GGT combined.
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