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Test Code CA19 Cancer Antigen 19-9 (CA 19-9), Serum

Additional Codes

Sunrise Clinical Manager (SCM) Orderable:   Cancer Antigen, GI Ca 19-9

AllScripts (AEHR) Orderable:  Cancer Antigen, GI Ca 19-9

Performing Laboratory

Northwell Health Laboratories


Electrochemiluminescence Immunoassay (ECLIA)


Serum levels of CA 19-9 should not be interpreted as absolute evidence of the presence or absence of disease. The CA 19-9 value should be used in conjunction with information obtained from clinical diagnostic procedures.

Reference Values

≤ 35   U/mL

Test Classification and CPT Coding


Physician Office Specimen Requirements

Container/Tube:  Gold-top tube(s)

Specimen:  1 mL of serum

Transport Temperature:  Refrigerate

Stability:  5 Days Room Temperature

                 14 Days Refrigerated

                 3 Months Frozen


Day(s) and Time(s) Performed

Monday through Sunday, Continuously

Computer Interface Code

PDM # 5900350