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Test Code LAB3845 Legionella species, Molecular Detection, PCR, Varies

Important Note

Orderable by Infection Consultant only.

For Legionella serology, order LAB476.

For Legionella antigen, urine, order LAB886

Additional Codes

Mayo Test ID
LEGRP

Reporting Name

Legionella PCR

Useful For

Sensitive and rapid diagnosis of pneumonia caused by Legionella species

 

The assay is not recommended as a test of cure because bacteria nucleic acids may persist after successful treatment.

Performing Laboratory

Mayo Clinic Laboratories in Rochester

Specimen Type

Varies


Necessary Information


Specimen source is required.



Specimen Required


The high sensitivity of amplification by polymerase chain reaction requires the specimen to be processed in an environment in which contamination of the specimen by Legionella DNA is unlikely.

 

Specimen Type: Lower respiratory

Sources: Bronchoalveolar lavage, bronchial aspirate/brushing/lavage/washing, tracheal/endotracheal secretions/aspirate, sputum

Container/Tube: Sterile container

Specimen Volume: 1 mL

 

Specimen Type: Fresh tissue or biopsy

Sources: Lung, pleura, heart valve, pericardium

Container/Tube: Sterile container

Specimen Volume: Entire collection or 5 mm(3) - approximately the size of a pencil eraser

Collection Instructions: Aseptically collect a 1 to 2 cm(3) piece of tissue whenever possible

 

Specimen type: Fluid

Sources: Pericardial, pleural, chest, chest tube drainage, thoracentesis, empyema

Container/Tube: Sterile container

Specimen Volume: 1 mL


Specimen Minimum Volume

See Specimen Required

Specimen Stability Information

Specimen Type Temperature Time Special Container
Varies Refrigerated (preferred) 7 days
  Frozen  7 days

Reference Values

Not applicable

Day(s) Performed

Monday through Sunday

Test Classification

This test was developed and its performance characteristics determined by Mayo Clinic in a manner consistent with CLIA requirements. It has not been cleared or approved by the US Food and Drug Administration.

CPT Code Information

87801

LOINC Code Information

Test ID Test Order Name Order LOINC Value
LEGRP Legionella PCR 5020-3

 

Result ID Test Result Name Result LOINC Value
SRC57 Specimen Source 31208-2
29515 Legionella PCR, Result 5020-3

Reject Due To

Tissue in formalin, formaldehyde, or acetone
Formalin-fixed paraffin-embedded (FFPE) block		 Reject

Method Name

Rapid Polymerase Chain Reaction (PCR)

Report Available

3 days

Forms

If not ordering electronically, complete, print, and send a Microbiology Test Request (T244) with the specimen.