Skip to main content

Table 2 Overview of relevant laboratory test results of donor

From: A case report of transfusion-transmitted Plasmodium malariae from an asymptomatic non-immune traveller

Collection date Laboratory test Result Specimen
27 February 2007 Thrombocyte count 141 × 109/L Fresh blood
22 May 2007 Thrombocyte count 94 × 109/L Fresh blood
9 February 2011 Plasmodium species PCR * Negative Stored plasma
Malaria serology by ELISA * Negative (0.36, cut off <1.0) Stored plasma
Malaria serology by immunofluorescence assay (IFA) * Positive (1:40, cut-off <1:40) Stored plasma
7 June 2011 Plasmodium genus PCR Positive for Plasmodium spp. EDTA-blood
Malaria serology by immunofluorescence assay (IFA) Positive (1:160, cut-off <1:40) Serum
Plasmodium species PCR Positive for P. malariae EDTA-blood
17 August 2011 Thrombocyte count 126 × 109/L Fresh blood
Thick blood smear, QBC, malaria antigen test Negative Fresh blood
8 November 2011 Thrombocyte count 128 × 109/L Fresh blood
QBC, malaria antigen test, thin blood smear, malaria serology (ELISA) Negative Fresh blood
Thick blood smear One structure suspected for P. malariae Fresh blood
Plasmodium species PCR Positive for P. malariae Fresh blood
Plasmodium species PCR Positive for P. malariae Bone marrow biopsy
Leishmania spp. PCR Negative Bone marrow biopsy
26 November 2011 Thrombocyte count 144 × 109/L Fresh blood
1 December 2011 Thrombocyte count 157 × 109/L Fresh blood
12 July 2012 Thrombocyte count 139 × 109/L Fresh blood
Thick and thin blood smears, QBC, malaria antigen test, malaria serology (ELISA), Plasmodium species PCR Negative Fresh blood
6 March 2013 Thrombocyte count 209 × 109/L Fresh blood
  Thick and thin blood smears, QBC, malaria antigen test, malaria serology (ELISA), Plasmodium species PCR Negative Fresh blood
  1. The tests were performed in the following laboratories: Diagnostic Services, Sanquin Blood Supply Foundation, Amsterdam (2007 and malaria serology by ELISA first half 2011); Dept. Medical Microbiology, University Medical Centre St Radboud, Nijmegen, and/or Dept. Parasitology, Leiden University Medical Centre, Leiden (first half 2011); the Harbour Hospital Laboratory, Dept. Medical Microbiology and Infectious Diseases and Clinical Chemistry, Erasmus University Medical Centre and Harbour Hospital, Rotterdam (from August 2011 onwards). Tests marked by an *indicate results of tests performed retrospectively in May to July 2011 on materials collected on 9 February 2011.