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Laboratory Test Directory

Testosterone, Total

Components

Name Method Department Units
Testosterone, Total Chemiluminescence
Core Lab, Endocrinology ng/dL

Specimen Requirements

Whole blood

Container Type Container Size Specimen Volume
Preferred

Red tube, (no anticoagulant), No Gel

3 mL 2 mL
Alternate

Red Tube (no anticoagulant) with Gel

3 mL 2 mL
Alternate

Gold tube, (SST) with Gel

3.5 mL 2 mL
Alternate

Green tube (Lithium heparin), No Gel

3 mL 2 mL
Alternate

Green tube (Lithium heparin), with Gel

3 mL 2 mL
Alternate

Green tube (Sodium heparin), No Gel

3 mL 2 mL
Stability

Room temperature - 4 hour(s)
Refrigerated - 24 hour(s)

Specimen Preparation

  • Collect by venipuncture
  • Mix heparin tube by gentle inversion immediately after collection
  • Allow to clot completely at room temperature
  • Transport to laboratory as soon as possible
  • If delay in transport is greater than 4 hours, refrigerate

Serum Spun, Plasma Spun

Container Type Container Size Specimen Volume
Preferred

Red tube, (no anticoagulant), No Gel

3 mL 1 mL
Alternate

Red Tube (no anticoagulant) with Gel

3 mL 1 mL
Alternate

Gold tube, (SST) with Gel

3.5 mL 1 mL
Alternate

Green tube (Lithium heparin), No Gel

3 mL 1 mL
Alternate

Green tube (Lithium heparin), with Gel

3 mL 1 mL
Alternate

Green tube (Sodium heparin), No Gel

3 mL 1 mL
Stability

Room temperature - 4 hour(s)
Refrigerated - 7 day(s)
Frozen - 2 month(s)

Specimen Preparation

  • Collect by venipuncture
  • Mix heparin tube by gentle inversion immediately after collection
  • Allow to clot completely at room temperature
  • Transport to laboratory as soon as possible
  • Centrifuge within 4 hours, separate supernatant and refrigerate

Reasons for Rejection

  • Wrong type of specimen
  • Wrong collection tube
  • Gross hemolysis
  • Gross icterus
  • Gross lipemia

CPT Code

  • 84403