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Test Code IMMFCN Immune Cell Function

Important Note

DRAW M - F 6 AM to 2 PM! Must be shipped same day - cannot be collected on weekends, holidays, or within 2 days of a holiday (2 day processing).

Clinical System Name

Immune Cell Function




PHA Stimulated ATP

Sample Requirements

Specimen: Whole Blood

Container(s): Dark Green/Sodium Heparin

Preferred Vol: 3 mL

Minimum Vol: 2 mL


Note: DRAW M - F 6 AM to 2 PM! Must be shipped same day, DO NOT DRAW ON HOLIDAYS (EVEN WITHIN 2 DAYS OF A HOLIDAY) OR WEEKENDS. Capillary collections unacceptable. Lithium heparin is unacceptable.


Processing Instructions

Reject due to: Refrigeration or freezing. Sample stability. Capillary or Lt Green/Lithium Heparin collection.

Spin: N

Aliquot: N

Temp: RT

Storage location: Do not spin. Place whole blood in CPA RT send-outs rack.


Off-site collection:  Can only be collected at Seattle Children's Main Campus.


Specimen Type Temperature Time
Whole Blood Room temp 30 h
  Refrigerated N
  Frozen N



STAT Performed TAT
N   3 days


Performing Laboratory

IBT Reference Laboratory


IBT Reference Laboratory

1001 NW Technology Dr
Lee's Summit, MO 64086
(800) 305-5198

Reference Range


  ng/mL ATP
Low Immune Cell Response ≤ 225
Moderate Immune Cell Response 226 - 524
High Immune Cell Response ≥ 525




Analytical Volume: 2 mL


CPT Codes


Send Out Instructions


Reference Test Name: ImmuKnow®
Reference Test Number: 9000
Instructions: MUST reach IBT within 30 hours of blood draw. IBT accepts Saturday delivery. Ship ambient Priority via FedEx to IBT Reference Lab.