LEGIONELLA PNEUMOPHILA ANTIGEN, URINE

Mnemonic

LEGAG

Synonym

Legionella Antigen, Urine

Guidelines

Detects L. pneumophila type I only.

Specimen Collection Requirements

Collect

Urine, one sterile urine collection container

Handling

Aliquot from a well-mixed random urine collection.

Preferred Volume

5.0 mL

Minimum Volume

0.5 mL

Transport

Refrigerated (2-8°C); Boric acid may be used as a preservative

Rejection Criteria

Specimens in preservative other than Boric Acid

Stability

Ambient: 24 hours; Refrigerated: 2 weeks; Frozen: 2 weeks

Testing Information

Performed

7 days/week at GSRMC only

Reported

7 days/week at GSRMC only

Method

Immunochromatographic assay

Reference Values

Reference Values

Negative

Comments

A negative test result does not rule out the possibility of Legionella infection due to other serogroups or species of Legionella.  A Positive result may indicate a recent or remote infection with serogroup 1.  Excretion of Legionella antigen may vary depending on the individual patient.  Antigen excretion may begin as early as 3 days after onset of symptoms and persist for up to 1 year afterwards.

CPT Codes

87449

Last Updated: Friday, April 24, 2020 12:18:43 PM