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Laboratory Test Directory

Cystatin C

Components

Name Method Department Units
Cystatin C Nephelometry
Core Lab, Endocrinology mg/L

Specimen Requirements

Whole blood

Container Type Container Size Specimen Volume
Preferred

Red tube, (no anticoagulant), No Gel

3 mL 3 mL
Alternate

Gold tube, (SST) with Gel

3.5 mL 3 mL
Alternate

Green tube (Lithium heparin), No Gel

3 mL 3 mL
Alternate

Green tube (Lithium heparin), with Gel

3 mL 3 mL
Stability

Room temperature - 4 hour(s)
Refrigerated - 12 hour(s)

Specimen Preparation

  • Collect by venipuncture
  • Mix heparin tube by gentle inversion immediately after collection
  • 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

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
Stability

Refrigerated - 7 day(s)
Frozen - 3 month(s)

Specimen Preparation

  • Collect by venipuncture
  • Mix heparin tube by gentle inversion immediately after collection
  • Centrifuge, remove plasma/serum and refrigerate

Reasons for Rejection

  • Specimen collected in EDTA
  • Gross hemolysis
  • Not received at proper temperature
  • Not received within specified time frame
  • Capillary specimen

CPT Code

  • 82610