TABLE 1.

Differences in sensitivity by sample type and location of infection

Sample source by location and type of infectiona	No. positive/no. tested (% sensitivity) for:
	Urineb	Serumc	BAL fluid
Isolated pulmonary	43/52 (82.7)	9/14 (64.3)	5/8 (62.5)
Disseminatedd	2/3 (66.7)	1/3 (33.4)	0/0 (NAe)
Extrapulmonary	0/4 (0)	0/1 (0)	0/0 (NA)
Total	45/59 (76.3)	10/18 (55.6)	5/8 (62.5)
Urine and serum (any positive)	8/10 (80.0)

^aNo significant difference between sensitivity of urine, serum, or BAL fluid testing using Fischer's exact test (P = 0.203).

^bSignificant difference in the sensitivity of urine antigen testing between patients with isolated pulmonary, disseminated, and extrapulmonary infection (P = 0.001).

^cNo significant difference in serum sensitivity between isolated pulmonary, disseminated, or extrapulmonary infection (P = 0.08).

^dDisseminated includes patients with pulmonary and extrapulmonary infection.

^eNA, not applicable.