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Table 3 Discrepancies between PURE-LAMP and nested-PCR

From: Performance of the procedure for ultra-rapid extraction and loop-mediated isothermal amplification (PURE-LAMP) method to detect malaria in Haiti

Sample code

PURE-LAMP Pan (tt)

PURE-LAMP Pf (tt)

111

Positive (27.5)

Negative

174

Positive (16.2)

Positive (19.3)

234

Positive (21.5)

Positive (23.3)

242

Positive (22.5)

Positive (23.5)

277

Positive (19.1)

Positive (17.2)

704

Positive (18.3)

Positive (21.5)

707#

Positive (22.0)

Positive (18.1)

713

Positive (19.5)

Positive (20.5)

1310

Positive (20.2)

Positive (21.2)

276*

Positive (24.2)

Negative

  1. PURE-LAMP procedure for ultra-rapid extraction-loop-mediated isothermal amplification, PCR polymerase chain reaction, tt turbidity threshold time, Pan tubes for diagnosis of Plasmodium genus, Pf P. falciparum-specific tubes
  2. Average tt of PURE-LAMP Pan was 16.4 min (SD: 1.8; range: 13.1–24.2) among 82 concordant positives but 20.8 (SD: 3.2) min among 9 samples with PURE-LAMP Pan ( +) and nested PCR (-). All discrepant samples were negative by microscopy. # Denotes a sample positive by RDT Pf. * Denotes a sample positive by nested PCR and RDT. All other samples were negative by RDT and nested PCR