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Test Compendium


Test Code

  • 5217

Test Synonym

  • Natural Killer Cell, Quant

Specimen Requirements

  • Whole Blood


  • Lavender Top Tube and Yellow Acd-A or Yellow Acd Sol B


  • Ambient

CPT Codes

  • 86356,86357,86359
    *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

  • Lavender-top (EDTA) tube AND yellow-top (ACD-A) or (ACD-B)tube. Stable only 2 days Room Temp - must reach the Lab within 24 hours of the collection time. Test cannot be performed unless the lab receives both tubes ;Lavender-top (EDTA) tube AND yellow-top

Additional Information

  • Lavender-top (EDTA) tube AND yellow-top (ACD-A) or (ACD-B)tube required . Invert tubes 8 to 10 times immediately after collection. To preserve cellular viability, collect specimen so it will arrive in the laboratory within 24 hours of collection. Indicate date and time of venipuncture on the tube(s) and on the test request form. Stable only 2 days at Room Temp. Do NOT Refrigerate or Freeze

Specimen Stability

  • Stability: Ambient (Room Temp ) 2 days, must be tested within 48 hrs, Unstable refrigerated or Frozen