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 mLWhole bloodEDTA (Lavender) RefrigeratedDo NOT freeze. Transfer 1 mL whole blood to standard aliquot tube.

Alternate Specimen Requirements

Volume Type Container Collect Temperature Transport Temperature Special Instructions
1 mLWhole bloodACD A or B (Yellow) RefrigeratedDo NOT freeze. Transfer 1 mL whole blood to standard aliquot tube.
1 mLWhole bloodSodium or Lithium heparin (Green) RefrigeratedDo 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
AmbientUnacceptable
Refrigerated20 days
FrozenUnacceptable

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
       Normal4.6 - 11.2U/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.