Pyruvate Kinase
Test Mnemonic
PYRKIN
CPT Codes
- 84220 - QTY (1)
LOINC ®
32552-2
Performing Laboratory
ARUP
Specimen Requirements
| Volume | Type | Container | Collect Temperature | Transport Temperature | Special Instructions |
|---|---|---|---|---|---|
| 1 mL | Whole blood | EDTA (Lavender) | Refrigerated | Do NOT freeze. Transfer 1 mL whole blood to standard aliquot tube. |
Alternate Specimen Requirements
| Volume | Type | Container | Collect Temperature | Transport Temperature | Special Instructions |
|---|---|---|---|---|---|
| 1 mL | Whole blood | ACD A or B (Yellow) | Refrigerated | Do NOT freeze. Transfer 1 mL whole blood to standard aliquot tube. | |
| 1 mL | Whole blood | Sodium or Lithium heparin (Green) | Refrigerated | Do NOT freeze. Transfer 1 mL whole blood to standard aliquot tube. |
Minimum Specimen Requirements
| Volume | Type | Container | Collect Temperature | Transport Temperature | Special Instructions |
|---|---|---|---|---|---|
| 0.5 mL |
Stability
| Environmental Condition | Description |
|---|---|
| Ambient | Unacceptable |
| Refrigerated | 20 days |
| Frozen | Unacceptable |
Days Performed
Sun - Sat
Turnaround Time
2 - 3 days
Methodology
| Name | Description |
|---|---|
| Quantitative Enzymatic |
Reference Range
| Pyruvate Kinase | |||||
|---|---|---|---|---|---|
| Sex | Age From | Age To | Type | Range | Range Unit |
| Normal | 4.6 - 11.2 | U/g Hb |
Special Info
Do NOT freeze. This test is New York DOH approved.
Clinical Info
Preferred initial test to screen for pyruvate kinase deficiency. Patients who have been recently transfused have normal donor cells that may mask PK deficient erythrocytes.