Diagnostic tests for Legionella species

Diagnostic tests for Legionella species

Test characteristic	Urine antigen test	Culture	PCR
Strains detected	Detects only L. pneumophila serogroup 1*	All species and serogroups	All species and serogroups
Time to results	<1 hour	≥3 days	Hours
Overall sensitivity	70 to 80 percent	<10 to 80 percent	Exceeds culture^¶
Overall specificity	>99 percent	100 percent	>99 percent

PCR: polymerase chain reaction.
* L. pneumophila accounts for about 85 percent of cases worldwide but rates may be lower in some regions of the world, such as Australia and New Zealand, where L. longbeachae is prevalent.
¶ Typically detects twice as many cases as culture when testing lower respiratory samples.

Graphic 69022 Version 5.0

آیا می خواهید مدیلیب را به صفحه اصلی خود اضافه کنید؟