{"id":"procalcitonin","name":"Procalcitonin (PCT)","shortName":"Procalcitonin","aliases":["Procalcitonin","PCT","Procalcitonin, Serum","Procalcitonin, Plasma","Procalcitonin Level","Procalcitonin (PCT)","BRAHMS PCT","Pro-calcitonin"],"abbreviations":["PCT"],"loinc":[{"code":"33959-8","primary":true},{"code":"75241-0","primary":false},{"code":"111765-4","primary":false}],"specimen":"serum-or-plasma","units":[{"ucum":"ng/mL","display":"ng/mL"},{"ucum":"ug/L","display":"µg/L"}],"referenceRanges":[{"population":"Adults","low":0,"high":0.24,"unit":"ng/mL","unitDisplay":"ng/mL","note":"Adults. Mayo Clinic Laboratories prints 0.00 to 0.24 ng/mL for serum (treated as inclusive here). Healthy people usually sit under 0.1 ng/mL, and a review (Meisner 2014) calls 0.2 ng/mL or below a useful level for making sepsis less likely, so other labs and assays print other limits. Use the range printed on your report. Not for use in newborns and infants.","sources":[{"title":"Procalcitonin, Serum (Mayo test ID PRCAL)","url":"https://schnecklab.testcatalog.org/show/PRCAL","publisher":"Mayo Clinic Laboratories (catalog page mirrored on testcatalog.org)"},{"title":"Update on Procalcitonin Measurements","url":"https://pmc.ncbi.nlm.nih.gov/articles/PMC4071182/","publisher":"Annals of Laboratory Medicine","year":2014}]}],"review":{"status":"ai-verified","label":"AI-verified against cited sources. Awaiting expert review","lastReviewed":"2026-10-03"},"summary":"A protein that rises in serious bacterial infections. Clinicians use it with other findings, mostly in hospital, to judge severity and guide treatment.","url":"https://bloodtesttracker.com/markers/procalcitonin","notice":"Information, not medical advice. Ranges differ between labs, so the range on your own report is the one your result is judged against."}