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HelpTest Code LAB6026 Pyruvate, Spinal Fluid
Additional Codes
PYRC
Reporting Name
Pyruvic Acid, CSFUseful For
Investigating possible disorders of mitochondrial metabolism, when used in conjunction with cerebrospinal fluid lactate, collected at the same time, to determine the lactate-to-pyruvate (L:P) ratio
Evaluating patients with neurologic dysfunction and normal blood L:P ratios
Performing Laboratory
Mayo Clinic Laboratories in Rochester
Specimen Type
CSFAdditional Testing Requirements
This test does not calculate the lactate:pyruvate ratio. To obtain this information, both this test and LASF1 / Lactic Acid, Spinal Fluid must be ordered. The ratio can be calculated from the results obtained from these tests.
Specimen Required
Specimen Type: Spinal fluid
Container/Tube: Sterile vial
Specimen Volume: 0.6 mL
Collection Instructions: Send specimen from vial 4.
Specimen Minimum Volume
0.5 mL
Specimen Stability Information
| Specimen Type | Temperature | Time |
|---|---|---|
| CSF | Refrigerated (preferred) | 7 days |
| Frozen | 14 days | |
| Ambient | 7 days |
Reference Values
0.06-0.19 mmol/L
Day(s) Performed
Monday, Thursday
CPT Code Information
84210
Genetics Test Information
The cerebrospinal fluid lactate:pyruvate (L:P) ratio is considered a helpful (not diagnostic) tool in the evaluation of patients with possible disorders of mitochondrial metabolism, especially in patients with neurologic dysfunction and normal blood L:P ratios. Pyruvic acid levels alone have little clinical utility.
Report Available
2 to 5 daysReject Due To
| Gross hemolysis | Reject |
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
For information see: Epilepsy: Unexplained Refractory and/or Familial Testing Algorithm