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HelpTest Code STRPNEUAG Streptococcus pneumoniae Antigen, Random, Urine
Additional Codes
| Mayo Test ID |
|---|
| SPNEU |
Reporting Name
Streptococcus pneumoniae Ag, UUseful For
Rapid diagnosis of pneumococcal pneumonia
Performing Laboratory
Mayo Clinic Laboratories in Rochester
Specimen Type
UrineOrdering Guidance
Pneumococcal pneumonia is best diagnosed by sputum culture. For more information, see SPUTS / Bacterial Culture, Aerobic, Respiratory with Antimicrobial Susceptibilities, Varies.
Specimen Required
Supplies: Urine Tubes, 10 mL (T068)
Container/Tube: Plastic, 10-mL urine tube
Specimen Volume: 2 mL
Collection Instructions:
1. Collect a random urine specimen.
2. No preservative.
3. Excessively bloody or very turbid specimens containing protein, cells, or particulates will be canceled as they can inhibit the function of the test.
4. Centrifuging to remove particulates is not approved.
5. Specimens with any dyes or unnatural color are not acceptable and will be canceled.
Specimen Minimum Volume
0.25 mL
Specimen Stability Information
| Specimen Type | Temperature | Time | Special Container |
|---|---|---|---|
| Urine | Refrigerated (preferred) | 14 days | |
| Frozen | 14 days | ||
| Ambient | 24 hours |
Reference Values
Negative
Day(s) Performed
Sunday through Friday
Test Classification
This test has been cleared, approved, or is exempt by the US Food and Drug Administration and is used per manufacturer's instructions. Performance characteristics were verified by Mayo Clinic in a manner consistent with CLIA requirements.CPT Code Information
87899
LOINC Code Information
| Test ID | Test Order Name | Order LOINC Value |
|---|---|---|
| SPNEU | Streptococcus pneumoniae Ag, U | 77949-6 |
| Result ID | Test Result Name | Result LOINC Value |
|---|---|---|
| 83150 | Streptococcus pneumoniae Ag, U | 77949-6 |
Clinical Information
Streptococcus pneumoniae is the most frequently encountered bacterial agent of community-acquired pneumonia (CAP). Because of the significant morbidity and mortality associated with pneumococcal pneumonia, septicemia, and meningitis, it is important to have diagnostic test methods available that can provide a rapid diagnosis. In instances where empirical antibiotics are provided for CAP without culture confirmation of S pneumoniae, antigen testing may be useful.
Interpretation
A positive result is indicative of pneumococcal pneumonia.
Negative:
Negative for pneumococcal pneumonia, suggesting no current or recent pneumococcal infection. Infection due to Streptococcus pneumoniae cannot be ruled out since the antigen present in the sample may be below the detection limit of the test.
Cautions
A negative result does not exclude Streptococcus pneumoniae infection.
A diagnosis of S pneumoniae infection must take into consideration all test results, culture results, and the clinical presentation of the patient.
S pneumoniae vaccine may cause false-positive results, especially in patients who have received the vaccine within 5 days of having the test performed.
This assay has not been validated for use with body fluids other than urine or cerebrospinal fluid.
The performance of this assay in patients who have received antibiotics for more than 24 hours has not been established.
The accuracy of this assay has not been proven in small children.
Report Available
Same day/1 dayReject Due To
| Gross hemolysis | Reject |
| Turbid Dyes/unnaturally colored | Reject |
Method Name
Immunochromatographic Membrane Assay
Forms
If not ordering electronically, complete, print, and send Infectious Disease Serology Test Request (T916) with the specimen.