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HelpTest Code LAB3106 Blood Gas, ECMO Patient, Venous
Performing Laboratory
St. Louis Children's Hospital Laboratory - Core Lab
Specimen Requirements
NOTE: SPECIMEN SHOULD ARRIVE WITHIN 10 MINUTES OF COLLECTION
Patient Preparation: None
Collection Container/Tube:
Preferred: 1.0 mL Air-tight balanced heparinized blood gas syringe
Acceptable: 3.0 mL Air-tight balanced heparinized blood gas syringe
Submission Container/Tube: May not be received from outside facility
Specimen Collection Volume: 1.0 mL (minimum 0.3 mL if using the 1.0 mL syringe or absolute minimum of 0.8 mL if using the 3.0 mL syringe)
Special Instructions: Mix well and send to lab immediately. Place specimen in wet ice at bedside if unable to send immediately (removing specimen from ice to send thru tube system).
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: No established reference intervals for any component
Critical Value: None established
Methodology
Potentiometry and Amperometry
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 mL (minimum 0.3 mL in 1.0 mL syringe or 0.8 mL in 3.0 syringe) whole blood
Specimen Stability Information:
| Specimen Type | Temperature | Time |
|---|---|---|
| Whole Blood (unprocessed) | Ambient | 30 minutes |
| Plasma/Serum (processed) | Refrigerated | not acceptable |
| Ambient | not acceptable | |
| Frozen | not acceptable |
Test Classification and CPT Code
82803
LOINC
pH ECMO: 19213-8
pCO2 EMCO: 19121-0
pO2 ECMO: 19211-2
CO2 Totl ECMO: 20565-8
Last Reviewed
07/2025