Medicare Medical Necessity Restrictions May Apply
Medical Necessity Documentation:
Client Notes:
Patient Preparation:
Patient should discontinue taking Biotin, Vitamin B7, or Vitamin H 48 hours before getting blood drawn.
Specimen Requirements:
1.0 mL Serum in a SST Gold Top Tube
Collection Instructions:
Minimum Volume:
0.5 mL
Transport & Storage: Temperature/Stability:
8 hours Ambient
48 hours Refrigerated
Rejection Criteria:
Glass Tubes
Reference Range:
CA 19-9: <35 U/mL
Critical Ranges:
Test Comments:
This test was performed using the Roche Cobas 8000. Values obtained with different assay methods cannot be used interchangeably, because the concentration of CA 19-9 in any given specimen can vary, due to differences in assay methods and reagent specificity. Serum CA 19-9 levels, regardless of value, should not be interpreted as absolute evidence of the presence or absence of malignant disease.
Patients taking vitamin supplements containing doses of >5 mg/day may have falsely decreased test results generated.
Methodology:
Immunochemiluminometric Assay ECLIA
Clinical Significance:
A large percent of patients with gastrointestinal tumors (such as pancreative, liver, gastric, colorectal tumors) and some other malignancies have been shown to have elevated serum or plasma CA 19-9 levels may be useful for monitoring disease activity predicitng replaps following treatment. CA 19-9 should not be used as a screening test.
Documentation:
Custom Panel:
No
PRODUCTION SCHEDULE
Days Performed:
Sunday, Monday, Tuesday, Wednesday, Thursday, Friday, Saturday
Sites Performed:
Parkview Regional Medical Center
PHL Test Code:
CA199
EPIC Test Code:
IMO407
Alternate Test Names:
CA 19-9; Carbohydrate Antigen 19-9
Included Tests:
CPT Coding:
86301