Laboratory Test Detail

Last Updated: March 22, 2019 @ 9:13 am

2126

Vitamin B12

Specimen:Collect:
  • One SST

Also Acceptable:
  • One Green Top (Na Heparin)
  • One Lavender (EDTA)
  • One Pink Top (EDTA)
  • One Red Top
Submit:
  • 1 mL (Min:0.5 mL) Serum . Submit Refrigerated.

Also Acceptable:
  • 1 mL (Min:0.5 mL) Plasma . Submit Refrigerated.
Special Handling:
  • Fasting Specimen is Preferred
  • For patients receiving therapy with high biotin doses (>5 mg/day), no laboratory test specimen should be collected until at least 8 hours after the last biotin administration.
  • Minimize air exposure
  • Protect from Light
  • Separate from cells within 2 hours of collection
  • SST collection stable for 24 hours.
Rejection Criteria:
  • Grossly Hemolyzed Samples
  • Heat inactivated
Stability:Ambient: 2 Hour(s); Refrigerated: 2 Day(s); Frozen: 2 Month(s); Incubated: Unacceptable
Methodology:
  • Electrochemiluminescence Immunoassay (ECLIA)
Performed:Mon-Fri
Reported:1-3 Day(s)
CPT Codes:
  • 82607
Interpretive Data:General Reference Range : 232-1245 pg/ml
Please note reference range change as of 10/9/2017.

Biotin in specimens taken from patients on high-dose biotin therapy or supplements may intefere with this test and cause inaccurate test results. It is recommended that for patients receiving therapy with high biotin doses (> 5 mg/day), no laboratory test specimen should be collected until at least 8 hours after the last biotin administration.
Components:
  • 2126 - VITAMIN B12
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