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Test Compendium

2048: OSMOLALITY

Test Code

  • 2048

Test Synonym

  • Osmolality, Serum

Minimum Volume

  • 2 mL

Specimen Requirements

  • Serum Or Plasma

Container

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

Storage

  • Refrigerated

Turn Around Time

  • 3 days

CPT Codes

  • 83930
    *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

  • 2 mL serum from an SST or Red Top tube, Heparinized plasma from green

Additional Information

  • Serum from an SST or Red Top Tube. Separate serum from cells as soon as possible after clot formation. Plasma from a Green Top is acceptable Transfer heparized plasma or red top serum to plastic transport tube.

Specimen Stability

  • AMBIENT: 14 days REFRIGERATED: 14 days FROZEN: 14 days