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Laboratory Test Directory

Vitamin B7, H (Biotin)


Name Method Department Units
Vitamin B7, H (Biotin) Bioassay
Send Out pg/mL

Specimen Requirements

Serum Spun

Container Type Container Size Specimen Volume

Red tube, (no anticoagulant), No Gel

3 mL 2 mL

Red Tube (no anticoagulant) with Gel

3 mL 2 mL

Gold tube, (SST) with Gel

3.5 mL 2 mL

Frozen - 14 day(s)

Specimen Preparation

  • Protect specimen from light. Cover with foil
  • Allow to clot completely at room temperature
  • Centrifuge within 30 minutes, separate supernatant, and freeze

Reasons for Rejection

  • Not protected from light
  • Non frozen specimen
  • Wrong type of specimen
  • Gross hemolysis
  • Gross lipemia


Collect red top and protect from light immediately. Sample will be sent to Cambridge Biomedical for testing.

CPT Code

  • 84591