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HelpTest Code LAB3089 Lactate (Rapid), Whold Blood
Performing Laboratory
St. Louis Children's Hospital Laboratory - Core Lab
Specimen Requirements
Patient Preparation: None
Collection Container/Tube:
Preferred: Air-tight balanced heparinized blood gas syringe
Acceptable: Heparinized Capillary blood gas tube
Submission Container/Tube: May not be received from outside facility
Specimen Collection Volume: 1.0 mL (minimum 0.3 mL)
Special Instructions: Mix well and send to lab immediately. Place specimen in wet ice if unable to send immediately (removing from wet ice to send thru tube system).
If collecting in capillary blood gas tube be sure to add flea to mix.
Sample Rejection
Mislabled or unlabeled specimens
Clotted specimens
Logistics
Test Availability: Monday-Sunday
Cut-off time: None, performed as received
Turnaround Time: Same Day; 30 minutes from receipt in lab
Reference Values
Reference Interval (all ages): 0.7-2.0 mmol/L
Critical Value: >8.0 mmol/L
Critical results will be called back automatically initially and every 24 hours thereafter.
Methodology
Electrodes with enzymatic membranes
Limitations
- NA
Additional Information
FOR SLCH CORE LABORATORY USE ONLY
Lab Processing Instructions: DO NOT SPIN. give specimen directly to blood gas bench
Processed Volume: 1.0 (minimum 0.3 mL) whole blood
Analyte Stability:
| Specimen Type | Temperature | Time |
|---|---|---|
| Whole Blood (unprocessed) | Ambient | 30 minutes |
| Plasma/Serum (processed) | Refrigerated | do not process |
| Ambient | do not process | |
| Frozen | do not process |
Test Classification and CPT Code
83605
LOINC
32693-4
Last Reviewed
07/2025