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SOP – Malaria Microscopy - NVBDCP

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Quality Assurance of <strong>Malaria</strong> Diagnostic testsNATIONAL VECTOR BORNE DISEASE CONTROL PROGRAMME (<strong>NVBDCP</strong>)STANDARD OPERATING PROCEDURE FOR QA<strong>SOP</strong> TitlePREPARATION OF QA PANEL SLIDES FOR EQAS<strong>SOP</strong> No. <strong>SOP</strong>: M 06 Revision No. 0.0 Effective Date Dec. 2007Replacement No Dated Page No.Next Review onMaximum 2 years from “effective date”<strong>SOP</strong>: M 06- PREPARATION OF QA PANEL SLIDES FOR EQAS8.6.1 PurposeThis <strong>SOP</strong> describes the preparation of <strong>Malaria</strong> positive blood smears of known diagnosticcomposition, for conducting EQA.8.6.2 ObjectivesThe validated and coded blood smears for malaria microscopy will be prepared by theidentified external institution for testing the proficiency of the LTs and accuracy in expressingresults.8.6.3 ProcedureOne of the important responsibilities of the National Reference Laboratory (National Instituteof <strong>Malaria</strong> Reseach) is to prepare the QA panel slides for conducting EQAS. The slides willbe prepared by the following steps:• prepare blood smears from malaria positive patients, following the methodalready described in <strong>SOP</strong> M. 01.• collect 5ml blood by venepuncture from patients found to be malaria positive(donor’s venepuncture: patients found to be malaria positive collect 5 ml bloodafter obtaining consent).• on an average, prepare 50 slides from each donor’s blood and stain in separatebatches to avoid cross contamination during the preparation, following theprocedures at <strong>SOP</strong> M. 03.• each slide will have of both thick and thin smear.• stain slides with JSB stain and protect by permanent mounting with cover slip.• take proper care to mount the slides free from air bubbles.• label the slides with a code and ID number.• determine the consensus diagnosis by experienced microscopists from NIMR foreach patient/donor and record/report the results as positive or negative formalaria, the species and the parasite density for upper and lower limit.• fifty (50) sets of twenty (20) slides, i.e. one thousand (1000); each set containing8 P. falciparum, 4 P. vivax, 4 P. falciparum + P. vivax mixed infection and 4malaria negative slides will be provided for assessing the competence andproficiency of LTs in malaria diagnosis, species identification and densitydetermination.• to accommodate the anticipated high demand, the distribution of these sets ofslides will be on a time-restricted manner twice a year.<strong>SOP</strong> – <strong>Malaria</strong> <strong>Microscopy</strong>© Copyright to Dte. <strong>NVBDCP</strong> Only. Any modification are prohibited

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