Immune Function Assay ATP
Test Mnemonic
IMMFUN
CPT Codes
- 86352 - QTY (1)
Aliases
- CD4 Immune Function Assay
- ImmuKnow
Includes
- ATP Level
Performing Laboratory
ViraCor-IBT Laboratories
Specimen Requirements
| Volume | Type | Container | Collect Temperature | Transport Temperature | Special Instructions |
|---|---|---|---|---|---|
| 2 - 3 mL | Whole blood | Sodium heparin (Green) | Ambient | Specimen must be collected AFTER 6 am and received at Cleveland Clinic Laboratories on the day of collection by 12:00 noon Monday - Friday. DO NOT collect the day before or after a major holiday. Critical Ambient Temperature. |
Minimum Specimen Requirements
| Volume | Type | Container | Collect Temperature | Transport Temperature | Special Instructions |
|---|---|---|---|---|---|
| 0.5 mL |
Stability
| Environmental Condition | Description |
|---|---|
| Ambient | 30 hours |
| Refrigerated | Unacceptable |
| Frozen | Unacceptable |
Days Performed
Mon - Sat
Turnaround Time
3 - 4 days
Methodology
| Name | Description |
|---|---|
| Chemiluminescence (CL) |
Reference Range
| ATP Level | |||||
|---|---|---|---|---|---|
| Sex | Age From | Age To | Type | Range | Range Unit |
| Years | 99 Years | Normal | 226 - 524 | ng/mL | Low response: <=225 ng/mL; Moderate Response: 226-524 ng/mL; Strong Response: >=525 ng/mL |
Special Info
Specimens must be collected Monday - Friday AFTER 6 a.m. EST only and received in testing lab by 12:00 noon on the day of collection. Samples must NOT be drawn in green top lithium heparin tubes. Specimen types other than heparinized whole blood collected in sodium heparin tubes are unacceptable. Whole blood that is frozen, refrigerated, clotted, or received in a transfer tube will be rejected. Specimens > 30 hours old will be rejected.
Clinical Info
This is an immune cell function assay that detects cell-mediated immunity in an immunosuppressed population. The assay detects cell-mediated immunity by measuring the concentration of adenosine triphosphate (ATP) from CD4 cells following stimulation.