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Test Compendium


Test Code

  • 2657

Test Synonym

  • Dexamethasone


  • 3 mL

Minimum Volume

  • 2 mL

Specimen Requirements

  • Serum Or Plasma


  • Serum Separator Tube, Transfer Tube- Serum, Plain Red Top Tube, Lavender Top Tube, Green Top Tube, Transfer Tube - Plasma


  • Refrigerated

CPT Codes

  • 82542
    *The CPT codes provided are based on AMA guidelines and are provided for informational purposes only. CPT coding is the responsibility of the billing entity. Please direct any questions regarding the CPT coding to the payer being billed.

Special Instructions

  • 3 mL Serum from an SST (gel-barrier) or Red Top or Plasma from Lavender or Green top tube

Additional Information

  • SST (gel-barrier) or Red top tube for serum. Also acceptable for Plasma -Lavender top (EDTA) tube or Green top (heparin) tube. Separate serum/plasma from cells within one hour of collection. Transfer to a plastic transport tube.

Specimen Stability

  • Ambient : 6 days Refrigerated : 14 days Frozen: 1 year