Roche COBAS Electrochemiluminescent Immunoassay (ECLIA) or other automated chemistry method
Rejection Criteria
Gross hemolysis
Reference Range(s)
<=25 U/ML
Specimen Requirements
Preferred Specimen
Serum Separator Tube (SST)
Minimum Volume
1 mL serum
Sample Stability
2 days room temperature 5 days refrigerated 3 months frozen. Allow only one freeze/thaw cycle
Transport Temperature
Refrigerated
Collection Instructions
Do not collect samples from patients receiving therapy
with high biotin doses (>5 mg/day) until at least 8 hours
following the last biotin administration.
Alternative Specimen
2 mL serum from a plain red top tube. Allow sample to clot
in an upright position for at least 60 minutes, then
centrifuge sample and transfer serum to a plastic transport
tube within 2 hours of collection. Clearly label tube as
serum from a plain red top tube
