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HelpTest Code LAB744 - Draw only @ Pyruvic Acid, Blood
Additional Codes
| Ordering Mnemonic | Mayo Test ID |
|---|---|
| PYRV | PYR |
Reporting Name
Pyruvic Acid, BUseful 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 bloodAdditional Testing Requirements
This test does not calculate the lactate:pyruvate ratio. To obtain this information, both this test and LACS1 / Lactate, Plasma must be ordered. The ratio can be calculated from the results obtained from these tests. A separate specimen must be obtained for lactate testing, see LACS1 / Lactate, Plasma.
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
Specimen Volume: Exactly 1 mL
Collection Instructions:
1. Special collection tube must be prechilled prior to collection.
2. Draw enough blood directly into syringe to add exactly 1 mL of blood to the prechilled special collection tube.
3. Taking care to not spill any of the preservative, cautiously remove the cap from the tube.
4. Immediately transfer blood, once drawn, to the prechilled, special collection tube, recap, and shake vigorously to mix.
Additional Information:
1. Check expiration date before using. Supplied collection tube expires 14 months after preparation.
2. If perchloric acid (preservative) spills, obtain a new, prechilled tube.
Specimen Minimum Volume
See Specimen Required
Specimen Stability Information
| Specimen Type | Temperature | Time | Special Container |
|---|---|---|---|
| Whole blood | Refrigerated | 15 days | PYRUVATE |
Reference Values
0.08-0.16 mmol/L
NIH Unit
0.7-1.4 mg/dL
Day(s) Performed
Monday, Wednesday
Test Classification
This test was developed and its performance characteristics determined by Mayo Clinic in a manner consistent with CLIA requirements. It has not been cleared or approved by the US Food and Drug Administration.CPT Code Information
84210
LOINC Code Information
| Test ID | Test Order Name | Order LOINC Value |
|---|---|---|
| PYR | Pyruvic Acid, B | 14121-8 |
| Result ID | Test Result Name | Result LOINC Value |
|---|---|---|
| 8657 | Pyruvic Acid, B | 14121-8 |
| 7729 | Pyruvic Acid, B | 2905-8 |
Report Available
2 to 5 daysReject Due To
| Gross hemolysis | OK |
| Gross lipemia | OK |
Method Name
Spectrophotometry (SP)
Forms
1. Biochemical Genetics Patient Information (T602)
2. If not ordering electronically, complete, print, and send a Biochemical Genetics Test Request (T798) with the specimen.
Special Instructions
Testing Algorithm
See Epilepsy: Unexplained Refractory and/or Familial Testing Algorithm