Test Details
Mnemonic
PYRUA
Ordering Code
3672200
CPT-4 Code(s)
84210
Specimen Information
Patient Preparation
Patient should be fasting and at complete rest. Patient should avoid any exercise of the arm and hand before or during collection. Draw the specimen without the use of a tourniquet or within 3 minutes of applying the tourniquet, but before releasing the tourniquet.
Collect
Green top sodium or lithium heparin
Specimen Preparation
Immediately after blood sample has been obtained, add 1.0 mL whole blood to a chilled collection tube containing 2 mL 8% (W/V) perchloric acid. Mix well for 30 seconds and place in an ice bath for 10 minutes. Centrifuge for 10 minutes at 1500 x g (2550 RPM). Decant 2.0 mL supernatant and send in screw capped plastic vial.
Minimum Volume
1.0 mL
Transport Temperature
Frozen
Rejection Criteria
Specimens not prepared as indicated
Stability
Room temperature: Unacceptable
Refrigerated: 2 days
Frozen: 30 days
Refrigerated: 2 days
Frozen: 30 days
Methodology
Quantitative Enzymatic
Reference Range
0.03 - 0.107 mmol/L
Performing Laboratory
ARUP Reference Laboratory
New York DOH Approval Status
Yes