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HelpTest Code LAB482 Mononucleosis Screen
Performing Laboratory
St. Louis Children's Hospital Laboratory - Chemistry
Specimen Requirements
Patient Preparation: None
Collection Container/Tube:
Preferred: Gold SST gel tube
Acceptable: Plain red-top tube or Lavender (EDTA) tube/or microtainer
Submission Container/Tube: If specimen is coming from outside facility and collected in a plain red-top tube or EDTA tube aliquot processed sample into a plastic vial for transport (labeling with specimen type).
Specimen Collection Volume: 1.0 mL (minimum 0.5 mL)
Special Instructions: Send to lab promptly.
Sample Rejection
Mislabled or unlabeled specimens
Logistics
Test Availability: Monday-Sunday
Cut-off time: None; performed as received
Turnaround Time: Same Day; 2 hours from receipt in lab
Reference Values
Reference Interval: Negative (reported as positive or negative)
Critical Value: None established
Methodology
Direct solid-phase immunoassay technology for qualitative detection
Limitations
- NA
Additional Information
FOR SLCH CORE LABORATORY USE ONLY
Lab Processing Instructions: Centrifuge to separate. If specimen is collected in a plain red-top tube or EDTA tube aliquot sample into screw-cap,plastic vial for testing (labeling aliquot with specimen type).
Processed Volume: minimum 0.2 mL serum (or plasma)
Analyte Stability:
| Specimen Type | Temperature | Time |
|---|---|---|
| Whole Blood (unprocessed) | Ambient | 8 hours |
| Plasma/Serum (processed) | Refrigerated (preferred) | 2 days |
| Ambient | 8 hours | |
| Frozen | 1 month |
NOTE: Samples which are cloudy or have particulate material should be clarified by low-speed centrifugation.
Test Classification and CPT Code
86038
LOINC
31418-7
Last Reviewed
08/2025