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Table 2 False positive Pv-pLDH lines in 42 P. falciparum samples with parasite densities ≥2%

From: Malaria rapid diagnostic tests: Plasmodium falciparum infections with high parasite densities may generate false positive Plasmodium vivax pLDH lines

Samples

RDT number and type

 

Nr

% parasite density

Origin

1. Two-band

4. Three-band

6. Four-band

7. Four-band

8. Four-band

9. Four-band

Total RDTs positive

1

2,0

MAF

-

-

-

-

-

W

1

2

2,2

MAF

-

*

F

-

-

-

1

3

2,3

MAF

-

*

W

-

-

-

1

4

2,8

WAF

F

F

-

-

-

-

2

5

3,2

MAF

W

S

W

W

W

W

6

6

3,2

MAF

-

*

-

F

F

-

2

7

3,3

WAF

-

*

F

-

-

-

1

8

3,7

ND

S

*

-

F

-

-

2

9

3,8

ND

-

-

-

F

-

-

1

10

3,9

ND

-

-

W

F

-

-

2

11

4,0

WAF

S

S

W

F

W

-

5

12

4,2

WAF

W

M

-

-

-

-

2

13

4,5

WAF

F

F

-

-

-

-

2

14

4,6

MAF

-

-

F

-

-

-

1

15

5,3

WAF

M

M

W

F

-

-

4

16

5,5

WAF

-

-

-

F

-

-

1

17

5,7

MAF

S

S

W

W

-

F

5

18

6,6

MAF

F

*

-

-

-

-

1

19

7,0

ND

-

-

W

F

-

-

2

20

7,2

WAF

S

*

W

M

W

M

5

21

7,4

WAF

-

-

-

F

-

-

1

22

7,6

MAF

-

-

-

F

-

-

1

23

9,1

ND

-

-

-

-

-

W

1

24

9,6

ND

*

M

W

F

-

-

3

25

20,0

ND

-

-

-

F

-

-

1

26

20,0

WAF

F

-

-

F

-

-

2

27

20,0

WAF

-

-

W

-

-

-

1

28

20,0

WAF

W

S

W

F

W

-

5

29

20,0

WAF

W

M

F

F

-

W

5

30

20,0

WAF

-

-

F

F

-

-

2

31

20,0

ND

F

-

-

-

-

-

1

32

20,0

ND

F

-

-

F

-

-

2

33

20,0

WAF

-

-

-

F

-

-

1

34

20,0

MAF

-

*

-

-

-

W

1

35

20,0

ND

-

*

F

-

-

-

1

36

20,0

MAF

F

*

-

-

-

-

1

37

20,0

WAF

-

*

W

-

-

-

1

38

20,0

WAF

-

*

F

-

-

-

1

39

20,0

WAF

-

*

F

-

-

-

1

40

20,0

MAF

-

-

-

F

-

-

1

41

20,0

WAF

-

M

W

W

W

-

4

42

35,0

WAF

-

*

-

-

F

-

1

Total false positive Pv-pLDH lines

16

11

21

23

7

7

85

  1. MAF = Middle Africa; WAF = West Africa; ND = No Data
  2. F = faint; W = weak; M = medium; S = strong; - = negative; * = sample not tested due to lack of RDT or sample