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Lab Test Dictionary

Natural Killer Cells, Functional (34184)


Flow Cytometry

Specimen Type

Whole Blood

Performing Lab

Quest Diagnostics San Juan Capistrano

Epic ID

Other Reference Test

Lab Test Days


Standard TAT

2-6 Days

Collection Information

Specimen Required

5-10 mL Whole Blood

Container Type

Dark Green (Sodium Heparin)

Collection Instructions

Collect Monday-Thursday only no weekends or holidays

Processing Information - Lab Use Only

Transport Temperature


Specimen Stability

Room temp: 48 hours; Refrigerated: Unacceptable; Frozen: Unacceptable

Rejection Criteria

Hemolysis: Received refrigerated: Received frozen: Clotted Specimens: Expired (>48 hours)

Test Volume Required

10 mL whole blood

Minimum Test Volume

5 mL whole blood

Processing Instructions

Submit Monday-Thursday only no weekends or holidays.


Insurance authorization is required prior to draw for Outpatients. Ok to send on Inpatients.

CPT Codes

88184, 88185 (x2)