Table 1 Comparison of FLIPP-NAAT with smear microscopy and Xpert MTB/RIF.

From: A modular paper-and-plastic device for tuberculosis nucleic acid amplification testing in limited-resource settings

Study No.

Smear

Xpert MTB/RIF assay

VL/L/M/H

FLIPP-NAAT

1

3+

Mtb+

H

Mtb+

2

No AFB

Negative

N/A

Negative

3

2+

Mtb+

H

Mtb+

4

3+

Mtb+

H

Mtb+

5

No AFB

Negative

N/A

Negative

6

No AFB

Negative

N/A

Negative

7

2+/3+

Mtb+

H

Mtb+

8

3+

Mtb+

M

Mtb+

9

Sc

Mtb+

M

Mtb+

10

2+

Mtb+

L

Mtb+

11

No AFB

Negative

N/A

Mtb+

12

2+

Mtb+

M

Mtb+

13

1+

Mtb+

M

Mtb+

14

3+

Mtb+

M

Mtb+

15

No AFB

Negative

N/A

Negative

16

2+

Mtb+

L

Mtb+

17

1+

Mtb+

L

Mtb+

18

3+

Mtb+

M

Mtb+

19

1+

Mtb+

M

Mtb+

20

No AFB

Negative

N/A

Mtb+

21

No AFB

Mtb+

L

Mtb+

22

No AFB

Mtb+

VL

Mtb+

23

No AFB

Mtb+

L

Mtb+

24

No AFB

Mtb+

VL

Mtb+

25

No AFB

Mtb+

VL

Mtb+

26

No AFB

Negative

N/A

Negative

27

No AFB

Negative

N/A

Mtb+

28

No AFB

Negative

N/A

Mtb+

29

No AFB

Negative

N/A

Negative

30

No AFB

Negative

N/A

Mtb+

  1. VL: Very low, L: Low, M: Medium, H: High.