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Test Code LAB744 Pyruvic Acid, Blood

Additional Codes

Mayo Test ID
PYR

48315

Reporting Name

Pyruvic Acid, B

Useful For

Screening for possible disorders of mitochondrial metabolism, when used in conjunction with blood lactate collected at the same time to determine the lactate-to-pyruvate ratio

Performing Laboratory

Mayo Clinic Laboratories in Rochester

Specimen Type

Whole blood


Additional Testing Requirements


This test does not calculate the lactate:pyruvate ratio. To obtain this information, LACS1 / Lactate, Plasma and PYR / Pyruvic Acid, Blood must be ordered. The ratio can be calculated from the results of those tests.



Specimen Required


Call 800-533-1710 or 507-266-5700 to order special collection tube.

 

Patient Preparation: Fasting (at least 4 hours)

Supplies: Perchloric Acid–Pyruvate Tube (T012)

Container/Tube: Special collection tube containing 2.5 mL of 6% perchloric acid (T012)

Specimen Volume: Exactly 1 mL

Collection Instructions:

1. Special collection tube must be prechilled prior to draw.

2. Draw enough blood directly into syringe to add exactly 1 mL of blood to the prechilled special collection tube.

3. Once drawn, immediately transfer blood to the prechilled, special collection tube and shake vigorously to mix.

Additional Information:

1. Check expiration date before using. Supplied collection tube expires 12 months after preparation.

2. If perchloric acid spills, obtain new, prechilled tube.


Specimen Minimum Volume

See Specimen Required

Specimen Stability Information

Specimen Type Temperature Time
Whole blood Refrigerated 15 days

Reference Values

0.08-0.16 mmol/L

 

NIH Unit

0.7-1.4 mg/dL

Day(s) and Time(s) Performed

Tuesday, Friday; Varies

Test Classification

This test was developed and its performance characteristics determined by Mayo Clinic in a manner consistent with CLIA requirements. This test has not been cleared or approved by the U.S. Food and Drug Administration.

CPT Code Information

84210

LOINC Code Information

Test ID Test Order Name Order LOINC Value
PYR Pyruvic Acid, B In Process

 

Result ID Test Result Name Result LOINC Value
8657 Pyruvic Acid, B 14121-8
7729 Pyruvic Acid, B 2905-8

Method Name

Spectrophotometry (SP)

Forms

1. Biochemical Genetics Patient Information (T602) in Special Instructions.

2. If not ordering electronically, complete, print, and send an Inborn Errors of Metabolism Test Request (T798) with the specimen.

Testing Algorithm

See Epilepsy: Unexplained Refractory and/or Familial Testing Algorithm in Special Instruction.