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Test Code LAB5564 Glucose, Whole Blood

Performing Laboratory

St. Louis Children's Hospital Laboratory  - Core Lab

Specimen Requirements

Patient Preparation: Eating affects results. Be sure to determine if fasting (>8hrs) or random specimen is required.

Collection Container/Tube:

Preferred: Air-tight balanced heparinized blood gas syringe (arterial or venous collection)

Acceptable: Heparinized Capillary blood gas tube or green microtainer

Submission Container/Tube: Not available to be sent from outside facilities

Specimen Collection Volume: 1.0 mL (minimum 0.3 mL)

Special Instructions: Miix well and send to lab immediately. 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: 

< 3 days: 50-110 mg/dL
≥ 30 days: 70-199 mg/dL                                                                    

Critical Value: 

<3 days: <45 mg/dL  OR  ≥ 450 mg/dL
≥ 3 days: <55 mg/dL  OR  ≥ 450 mg/dL

Critical test results will be automatically called back initially and every 24 hours thereafter

Methodology

Enzymatic

Limitations

  • NA

Additional Information

FOR SLCH CORE LABORATORY USE ONLY

Lab Processing Instructions: DO NOT SPIN. give specimen directly to blood gas bench for analysis

Processed Volume: 1.0 mL (minimum 0.3 mL) whole blood

Analyte Stability:

Specimen Type Temperature Time
Whole Blood (unprocessed)  Ambient 2 hours
Plasma/Serum (processed) Refrigerated     not acceptable
  Ambient  not acceptable  
  Frozen  not acceptable

Test Classification and CPT Code

82947

LOINC

2339-0

Last Reviewed

06/2025