{"id":"renin-activity","name":"Plasma Renin Activity (PRA)","shortName":"Renin activity","aliases":["Plasma Renin Activity","PRA","Renin Activity","Renin Activity, Plasma","Renin, Plasma Activity","Renin Activity, Plasma (Upright)","Renin Activity (Supine)","Renin Activity (PRA)","Plasma Renin Activity, LC/MS/MS","Renin, Plasma (Plasma Renin Activity)","Renin Activity, Plasma (Supine)","Renin Activity, Plasma, LC/MS/MS"],"abbreviations":["PRA"],"loinc":[{"code":"2915-7","primary":true},{"code":"17516-6","primary":false},{"code":"2918-1","primary":false}],"specimen":"plasma","units":[{"ucum":"ng/mL/h","display":"ng/mL/h"},{"ucum":"ng/L/s","display":"ng/L/s"},{"ucum":"ng/mL/min","display":"ng/mL/min"}],"referenceRanges":[{"population":"16+","low":0.167,"high":5.38,"unit":"ng/mL/h","unitDisplay":"ng/mL/h","note":"Labcorp interval (LC-MS/MS) for ages over 15, for blood drawn after at least 30 minutes of walking around. Other labs differ widely: Quest prints 0.25–5.82 ng/mL/h (mid-morning, after at least 2 hours upright, then seated 5–15 minutes); ARUP prints separate adult intervals for lying down (0.2–1.6) and upright (0.5–4.0) on a normal-sodium diet; Mayo Clinic Laboratories prints upright intervals by salt status and age: on a salt-replete diet, up to 4.3 at ages 18–39 and up to 3.0 at 40 and older, and on a salt-depleted diet, 2.9–24.0 and 2.9–10.8. Use the range printed on your own report.","sources":[{"title":"Renin Activity, Plasma (test 002006)","url":"https://www.labcorp.com/tests/002006/renin-activity-plasma","publisher":"Labcorp"},{"title":"Plasma Renin Activity, LC/MS/MS (test 16846)","url":"https://testdirectory.questdiagnostics.com/test/test-detail/16846/?cc=MASTER","publisher":"Quest Diagnostics"},{"title":"Renin Activity (test 0070105)","url":"https://ltd.aruplab.com/Tests/Pub/0070105","publisher":"ARUP Laboratories"},{"title":"Renin Activity, Plasma (test PRA)","url":"https://www.mayocliniclabs.com/test-catalog/overview/8060/renin-activity-plasma","publisher":"Mayo Clinic Laboratories"}]}],"review":{"status":"ai-verified","label":"AI-verified against cited sources. Awaiting expert review","lastReviewed":"2026-10-03"},"summary":"Measures how active renin is in your blood. Renin is a kidney enzyme that helps control blood pressure and salt balance.","url":"https://bloodtesttracker.com/markers/renin-activity","notice":"Information, not medical advice. Ranges differ between labs, so the range on your own report is the one your result is judged against."}