C193905Level 4
Cancer Antigen 19-9 [Units/Volume] in Serum or Plasma by Immunoassay
**Semantic type:** Laboratory Procedure
**Definition:** A quantitative immunoassay that measures the concentration (units/volume) of cancer antigen 19-9 in a serum or plasma specimen.
**Synonyms:** - Cancer Ag 19-9 [Units/volume] in Serum or Plasma by Immunoassay
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