| Test Name: | Lactate (Lactic Acid) |
| Epic Order Code: | Plasma: LAB729 |
| | CSF: LAB187 |
| CPT Code: | 83605 | | |
| Specimen(s) Type: | Plasma or CSF; 0.5 - 1.0 mL |
| Acceptable Container(s): |  Top is gray. Sterile CSF container |
| Testing Schedule: | 24 hrs/day, 7 days/week |
| Turn Around Time: | STAT: 1 hour | | |
| | Routine: 2 hours | | |
| Collection Information: | Specimen should be collected a minimum of 30 minutes after physical exercise. Obtain specimen by standard collection procedures. Place specimen on ice immediately. |
| Transport Information: | Deliver to lab immediately on ice. All specimens must be signed into the laboratory. |
| Reference Clients: | If unable to deliver to the lab immediately (within 15 minutes), centrifuge the specimen and remove the plasma from the red cells. Store and transport at 2-8° C. Specimen (plasma or CSF) must be received in the lab within 24 hours. |
| Causes for Rejection: | Improperly labeled, incorrect container, contaminated, insufficient quantity, incorrect/delay in transport. |
| Reference Range: | Plasma (venous): 0.7-2.1 mmol/L |
| | Critical: > 5 mmol/L |
| | CSF |
| | Neonate: | 1.1-6.7 mmol/L | |
| | 3-10 days old: | 1.1-4.4 mmol/L | |
| | > 10 days old: | 1.1-2.8 mmol/L | |
| | Adult: | 1.1-2.4 mmol/L | |
| Additional Information: | Do not use serum specimens. |