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Laboratory Test Directory

Endothelin I

Components

Name Method Department Units
Endothelin I Radioimmunoassay
Send Out pg/mL

Specimen Requirements

Plasma Spun, Serum Spun

Container Type Container Size Specimen Volume
Preferred

Purple tube (EDTA)

3 mL 3 mL
Alternate

Red Tube (no anticoagulant) with Gel

3 mL 3 mL
Alternate

Red tube, (no anticoagulant), No Gel

3 mL 3 mL
Alternate

Gold tube, (SST) with Gel

3.5 mL 3 mL
Stability

Frozen - 4 week(s)

Specimen Preparation

  • Centrifuge within 1 hour, separate supernatant and freeze

Reasons for Rejection

  • Wrong collection tube

Comments

Patients should not be on any ACTH, Corticosteroid or hypertension medications, if possible, for at least 48 hours prior to collection of specimen.

CPT Code

  • 83519