41310:VITAMIN B 12 & FOLATE

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41310:VITAMIN B 12 & FOLATE
Alias Names: B12 / VIT B12
Methodology: Chemiluminescent Immunoassay (CLIA)
Edit Date: 12/3/2008
Performed: Daily
Released: Same day
CPT Code: 82607 / 82746
Specimen Collection Details
Collection: One 7.5 mL serum separator tube (SST). Also acceptable: One 5 mL red top tube or one 4 mL green top tube (heparin).
Handling: Allow to clot, centrifuge and separate serum or plasma within 2 hours and pour into a plastic vial. Vitamin B12 and Folate are light-sensitive analytes. Protect the specimen from light. Refrigerate. Freeze if specimen cannot be assayed within 24 hours. Allow no more than one freeze/thaw cycle.
Stability: 24 hours refrigerated or 30 days frozen. Unstable ambient.
Standard Volume: 0.5 mL serum or plasma.
Minimum Volume: 200 µL serum or plasma.
Transport: Refrigerated, or frozen on dry ice.
Rejection Criteria: Moderate to gross hemolysis; EDTA specimen; specimen frozen/thawed more than once.

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