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HelpTest Code PYRC Pyruvate, Spinal Fluid
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 | Special Container |
|---|---|---|---|
| CSF | Refrigerated (preferred) | 7 days | |
| Frozen | 14 days | ||
| Ambient | 7 days |
Reference Values
0.06-0.19 mmol/L
Day(s) Performed
Monday, Wednesday
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
4 to 8 daysSpecimen Retention Time
2 monthsReject Due To
| Gross hemolysis | Reject |