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Table 3 RPR titres of TPPA DBS positive samples

From: The development and validation of dried blood spots for external quality assurance of syphilis serology

RPR titre

N=179

Negative

113

1/1

13

1/2

19

1/4

13

1/8

7

1/16

4

1/32

6

1/64

1

>1/128

3