Table 2 Smear and culture results for 103 positive cultures.

From: Evaluation of the efficacy of Myco/F lytic system, MGIT960 system and Lowenstein-Jensen medium for recovery of Mycobacterium tuberculosis from sterile body fluids

Smear result

No. (%) of isolates recovered

No. of smears

Myco/F lytic

MGIT

L-J medium

Negative

69

64 (92.75)

54 (78.76)

34 (49.28)

Positive

34

24 (70.59)

23 (67.65)

9 (26.47)

1+

18

13 (72.22)

11 (61.11)

5 (27.78)

2+

12

8 (66.67)

10 (83.33)

3 (25.00)

3+

2

1 (50.00)

0 (0)

0 (0)

4+

2

2 (100.00)

2 (100.00)

1 (50.00)

Total

103

88 (85.44)

77 (74.76)

43 (41.75)

  1. MGIT, BACTEC MGIT 960 system; L-J, Lowenstein-Jensen medium.
  2. #, χ2 test for differences in recovery rates: for smear negative specimens Myco/F lytic versus MGIT 960, P = 0.016; Myco/F lytic versus L-J, P < 0.0001; MGIT 960 versus L-J, P < 0.0001. For smear positive specimens Myco/F lytic versus MGIT 960, P = 0.793; Myco/F lytic versus L-J, P < 0.0001; MGIT 960 versus L-J, P = 0.0001.