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 g. 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

Methodology

Quantitative Enzymatic
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Reference Range

0.03 - 0.107 mmol/L
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Performing Laboratory

ARUP Reference Laboratory
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New York DOH Approval Status

Yes
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