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Test Code LAB94413 Legionella and Streptococcus pneumoniae Antigen, Urine

Infectious

Additional Codes

44090, 47222

Reporting Title

Legionella and S pneumoniae Antigen, Urine

Methodology

An in vitro rapid immunochromatographic assay for the quantitative detection of Legionella pneumophila and Streptococcus pneumoniae serogroup 1 antigen. 

Performing Laboratory

OhioHealth Laboratory Services- RMH Microbiology

Specimen Requirements

1. Collect 10 mL of urine in a screw capped, sterile container. 

2. Label container with the patient's name (first and last), date, and actual time of collection, and type of specimen. 

3. Maintain sterility and forward promptly at ambient temperature. If there is a delay in transport, send specimen refrigerated. 

 

Note: Specimens containing visible blood cannot be tested. 

 

Specimen Stability

Refrigeration/Frozen/Ambient

Reference Values

Negative

 

Note: A negative result for the Legionella test does not exclude the possibility of a Legionella infection, as it can be caused by other serogroups and Legionella species. There is no single satisfactory laboratory test for Legionnaires' disease. Therefore, culture results, PCR, serology, and/or antigen detection methods should be used in conjuction with clinical findings to make accurate diagnosis. 

 

Note: A negative result for S.pneumoniae does not exclude an S. pneumoniae infection. The result of this test as well as culture, serology, or other antigen detection methods should be used in conjuction with clinical findings to make an accurate diagnosis. 

- S. pneumoniae vaccine may cause a false positive result up to 10 days after vaccination. 

- Administration of antibiotics might influence test results for S. pneumoniae. 

- False results may occur from highly basic (pH ≥9) urine and give false positive S. pneumoniae results. 

- High levels (≥ 5%) of water-based personal lubricant might result in false positive L. pneumophila. 

Day(s) Test Set Up

Monday through Sunday

CPT Code

87449- Legionella Antigen, Urine

87449- Streptococcus pneumoniae Antigen, Urine