TABLE 3.

Agreement of results of sodium chloride tolerance test for rapidly growing Mycobacteria with expected results for all organisms tested at 35°C in ambient air with various inoculum concentrations^a

Organism	Expected result	No. of organisms/no. of tests	Suspension Ab			Suspension Bc			Suspension Cd
			No. of tests pos	No. of tests neg	% Correct	No. of tests pos	No. of tests neg	% Correct	No. of tests pos	No. of tests neg	% Correct
M. fortuitum	Pos	6/18	18	0	100	18	0	100	18	0	100
M. peregrinum	Pos	4/12	12	0	100	11	1	92	9	3	75
M. chelonae	Neg	4/12	0	12	100	0	12	100	0	12	100
M. abscessuse	Pos	6/18	14	4	78	13	5	72	8	7	44f
M. abscessus variant	Pos	5/15	15	0	100	15	0	100	10	2	67g
M. mucogenicum	Neg	6/18	0	18	100	0	18	100	0	18	100

^aExpected results are as defined by Kent and Kubica (3). LJ Salt from three manufacturers, BBL, Difco, and Remel, were used. pos, positive; neg, negative. 

^bA 1 McFarland standard suspension. 

^cA barely turbid suspension equal to 86 ± 2%T at 530 nm. 

^dA 1:2,500 dilution of a 1 McFarland standard suspension. 

^eIncludes a salt tolerance test-negative M. abscessus isolate. 

^fResults for 3 of 18 tests were uninterpretable. 

^gResults for 3 of 15 tests were uninterpretable.