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HelpTest Code LAB5238 Histone Autoantibodies, Serum
Additional Codes
| Quest Test ID |
|---|
| 37056 |
(Quest interface)
Performing Laboratory
St. Louis Children's Hospital Sendouts to Quest Diagnostics
Specimen Requirements
Patient Preparation: Overnight fasting preferred
Container/Tube
Preferred: Gold SST gel tube
Acceptable: Plain red-top tube
Collection Volume: 1.5 mL (minimum 0.8 mL)
Submission Container/Tube: If specimen is coming from outside facility aliquot processed sample into a plastic vial for transport.
Special Instructions: None
Sample Rejection
Mislabeled or unlabeled specimens
Specimens that are grossly hemolyzed and/or grossly lipemic
Logistics
Test Availability: Monday-Sunday
Test set-up: Wednesday & Friday
Turnaround Time: 5-8 days
Reference Values
Reference Interval:
| Value | Explanation of Results |
| <1.0 | Negative |
| 1.0-1.5 | Weak Positive |
| 1.6-2.5 | Moderate Positive |
| >2.5 | Strong Positive |
Critical Values: None established
Methodology
Enzyme Immunoassay (EIA)
Limitations
- NA
Additional Information
FOR SLCH CORE LABORATORY USE ONLY
Lab Processing Instructions: Centrifuge to separate. Aliquot sample into a leak-proof screw-capped plastic vial for transport.
Processed Volume: 1.0 mL (minimum 0.3 mL) serum
Transport Temperature: Refrigerated
Analyte Stability:
| Specimen Type | Temperature | Time |
|---|---|---|
| Whole Blood (unprocessed) | Ambient | NA |
| Plasma/Serum (processed) | Refrigerated (preferred) | 14 days |
| Ambient | 24 hours | |
| Frozen | 30 days |
Test Classification and CPT Code
83516
LOINC
43231-0
Last Reviewed
08/2025