Research Paper (postgraduate) from the year 2012 in the subject Medicine - Diagnostics, ( Atlantic International University ), language: English, abstract: Platelet counts and its associated indices of MPV, PDW and P-LCR were assayed in a total sample of 98 blood donors aged 19 to 55years here in Porto Novo. Among whom 47 were men(47.96%) and 51 were women (52.04%). The mean platelets count of 218.90 109/L were recorded among men samples while Platelet count of 247.8 109/L were recordedamong women blood donors. The platelet count were slightly higher in women than men and this increase is not statistically significant (P=0.01). The indices of platelets, MPV, PDW and P-LCR were also variable among both men and women, again these are notstatistically significant (P=0.01). Conclusion: The present study showed that platelet count are gender dependent and platelet indices should be paid attention to when diagnosing thrombocytopenia. The routine hematologic autoanalyzers should incorporate reticulated platelet absolutely necessary for the accurate assessment of marrow response to thrombocytopenia.