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Laboratory Test Directory

IGF-I

Components

Name Method Department Units
IGF-I Chemiluminescent Immunoassay
Core Lab, Endocrinology ng/mL

Specimen Requirements

Whole blood

Container Type Container Size Specimen Volume
Preferred

Red tube, (no anticoagulant), No 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), No Gel

Micro sample tube 1 mL
Alternate

Green tube (Lithium heparin), with Gel

3 mL 1 mL
Alternate

Green tube (Lithium heparin), with Gel

Micro sample tube 1 mL
Alternate

Green tube (Sodium heparin), No Gel

3 mL 1 mL
Stability

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

Specimen Preparation

  • Fill tubes to appropriate mark.
  • Mix heparin tube by gentle inversion immediately after collection
  • Transport to laboratory as soon as possible

Serum Spun, Plasma Spun

Container Type Container Size Specimen Volume
Preferred

Red tube, (no anticoagulant), No Gel

3 mL 0.5 mL
Alternate

Gold tube, (SST) with Gel

3.5 mL 0.5 mL
Alternate

Green tube (Lithium heparin), No Gel

3 mL 0.5 mL
Alternate

Green tube (Lithium heparin), No Gel

Micro sample tube 0.5 mL
Alternate

Green tube (Lithium heparin), with Gel

3 mL 0.5 mL
Alternate

Green tube (Lithium heparin), with Gel

Micro sample tube 0.5 mL
Alternate

Green tube (Sodium heparin), No Gel

3 mL 0.5 mL
Stability

Refrigerated - 24 hour(s)
Frozen - 12 month(s)

Specimen Preparation

  • Centrifuge, remove plasma/serum and refrigerate

Reasons for Rejection

  • Specimen collected in EDTA
  • Specimen collected in wrong tube type

CPT Code

  • 84305