Volume 69, Issue 1
  • ISSN: 0002-9637
  • E-ISSN: 1476-1645


The NOW ICT Malaria P.f./P.v. for Whole Blood (Binax, Inc., Portland, ME) is a new malaria rapid diagnostic device that represents a technical advance over previous assays, such as ICT™ Malaria P.f./P.v. and ICT™ Malaria P.f.. We evaluated this device in March 2001 in symptomatic patients at malaria clinics in Maesod, Thailand. Microscopic examination of Giemsa-stained blood smears was the reference standard. In 246 patients, microscopy showed 32 (13.0%) infected with , 63 (25.6%) with , 6 (2.4%) with mixed infections of and , 5 (2.0%) with , and 140 (56.9%) negative. Sensitivity for was 100% and specificity was 96.2% (200 of 208; 95% confidence interval [CI] = 92–98). For , sensitivity was 87.3% (55 of 63; 95% CI = 77–93) and specificity was 97.7% (173 of 177; 95% CI = 95–99), but all the four false-positive results were microscopically positive for ; thus, specificity for non- was 100%. These results suggest improved performance over NOW ICT predecessors.


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  • Received : 23 Jan 2003
  • Accepted : 02 Apr 2003

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