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Laboratory Test Directory

Testosterone Binding Globulin


Name Method Department Units
Sex Hormone Binding Globulin Electrochemiluminescence immunoassay (ECLIA)
Send Out nmol/L

Specimen Requirements

Serum Spun

Container Type Container Size Specimen Volume

Red tube, (no anticoagulant), No Gel

3 mL 0.5 mL

Red Tube (no anticoagulant) with Gel

3 mL 0.5 mL

Gold tube, (SST) with Gel

3.5 mL 0.5 mL

Room temperature - 14 day(s)
Refrigerated - 14 day(s)
Frozen - 14 day(s)

Specimen Preparation

  • Centrifuge within 1 hour, separate supernatant and freeze

Reasons for Rejection

  • Wrong collection tube
  • Not centrifuged within time frame


Serum must be separated from cells within 1 hour of collection. This test should not be ordered if XTESTF is already ordered as it is included with the XTESTF profile. Minimum volume does not permit repeat analysis.

CPT Code

  • 84270