Specimen Required

Container/Tube:
Preferred: Gold (Serum gel)
Acceptable: Red
Specimen Volume: 2.0 mL
 

Collection Instructions:
Serum gel tubes: Allow SST to clot in an upright position for at least 30 minutes, then centrifuge sample and transfer serum to a plastic transport tube within 2 hours of collection. Freeze.

Red-top tubes: 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. Freeze.

When multiple tests are ordered, submit a separate aliquot tube for this test.

Note: 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.