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Table 2 Proportion of positivity of molecular assays using DNA extracted from RDTs

From: DNA recovery from archived RDTs for genetic characterization of Plasmodium falciparum in a routine setting in Lambaréné, Gabon

  Time of sample storage
< 1 month
(N = 138)
1–3 months
(N = 57)
3–6 months
(N = 361)
> 6 months
(N = 113)
Total
(N = 669)
Assay
18 s PCR 135 (97.8%) 52 (91.2%) 353 (97.8%) 106 (93.8%) 646 (96.6%)
pfcrt PCR 120 (87%) 49 (86%) 314 (87%) 102 (90.3%) 585 (87.4%)
msp1 PCR 112 (81.2%) 52 (91.2%) 322 (89.2%) 106 (93.8%) 592 (88.5%)
  1. PCR, polymerase chain reaction; pfcrt, Plasmodium falciparum chloroquine resistance transporter; msp, merozoite surface protein; N, sample size