{"id":"platelets","name":"Platelet Count","shortName":"Platelets","aliases":["Platelets","PLT","Thrombocytes","Plt Count","Platelet Count (PLT)","Platelet","Thrombocyte Count","Plaquetas","Platelet Count","Platelet Count, EDTA","PLT Count","Thrombocytes Count"],"abbreviations":["PLT","Plt"],"loinc":[{"code":"777-3","primary":true},{"code":"26515-7","primary":false},{"code":"778-1","primary":false}],"specimen":"whole-blood","units":[{"ucum":"10*3/uL","display":"×10³/µL"},{"ucum":"10*9/L","display":"×10⁹/L"},{"ucum":"/uL","display":"cells/µL"},{"ucum":"10*5/uL","display":"lakh/mm³"}],"referenceRanges":[{"population":"Adults","low":150,"high":450,"unit":"10*3/uL","unitDisplay":"×10³/µL","note":"150–450 is printed on Labcorp CBC reports and used by the American Board of Pathology. Quest lists 140–400 for ages over 6 months, and OHSU, the University of Iowa and Health NZ Waikato use 150–400. In a study of about 41,000 people in Italy, the middle 95% was 141–362 in men and 156–405 in women aged 15 to 64, and lower after age 64 (122–350 in men, 140–379 in women). People of African ancestry also tend to have somewhat lower counts (Bain 1996).","sources":[{"title":"CBC, Platelet, No Differential (test 028142), sample report","url":"https://files.labcorp.com/testmenu-d8/sample_reports/028142.pdf","publisher":"Labcorp","year":2020},{"title":"Hematopathology reference ranges","url":"https://abpath.org/hematopathology-reference-ranges","publisher":"American Board of Pathology"},{"title":"Platelet Count, EDTA, test 723","url":"https://testdirectory.questdiagnostics.com/test/test-detail/723/?cc=MASTER","publisher":"Quest Diagnostics"},{"title":"Heme Reference Ranges (updated 6/5/18)","url":"https://www.ohsu.edu/sites/default/files/2019-07/cbcrefrange.pdf","publisher":"Oregon Health & Science University","year":2018},{"title":"CBC reference intervals (HEM-2597.01)","url":"https://lab.waikatodhb.health.nz/assets/test-attachments/230/CBC-reference-intervals.pdf","publisher":"Te Whatu Ora Health New Zealand, Waikato","year":2024},{"title":"CBC (Complete Blood Count), Pathology Handbook","url":"https://www.healthcare.uiowa.edu/path_handbook/handbook/test299.html","publisher":"University of Iowa Hospitals & Clinics"},{"title":"Age- and Sex-Related Variations in Platelet Count in Italy: A Proposal of Reference Ranges Based on 40987 Subjects' Data","url":"https://doi.org/10.1371/journal.pone.0054289","publisher":"PLoS ONE","year":2013},{"title":"Ethnic and sex differences in the total and differential white cell count and platelet count","url":"https://pubmed.ncbi.nlm.nih.gov/8881919/","publisher":"Journal of Clinical Pathology","year":1996}]}],"review":{"status":"ai-verified","label":"AI-verified against cited sources. Awaiting expert review","lastReviewed":"2026-10-03"},"summary":"The number of platelets, the small blood cells that help your blood clot, in a sample of your blood.","url":"https://bloodtesttracker.com/markers/platelets","notice":"Information, not medical advice. Ranges differ between labs, so the range on your own report is the one your result is judged against."}