{"id":"ph-venous","name":"Venous Blood pH","shortName":"Venous pH","aliases":["pH, Venous","Venous pH","pH (VBG)","pHv","Blood pH, Venous","pH, Central Venous","Venous blood pH","pH (venous)","VBG pH","pH, VBG","pH venous","Venous Blood Gas pH"],"abbreviations":["pHv","VBG pH"],"loinc":[{"code":"2746-6","primary":true},{"code":"97536-7","primary":false},{"code":"19213-8","primary":false}],"specimen":"whole-blood","units":[{"ucum":"[pH]","display":"pH"}],"referenceRanges":[{"population":"Adults","low":7.3,"high":7.43,"unit":"[pH]","unitDisplay":"pH","note":"Venous interval measured in 134 healthy Australian adults on a Radiometer ABL827 analyzer (7.30–7.43). A second study of 182 healthy adults in Pakistan found 7.29–7.43, and the first group's calculated interval from arterial ranges was 7.32–7.42. A 2025 review lists peripheral venous pH as 7.36 (7.29–7.45). Alberta Precision Laboratories prints 7.30–7.40 for venous blood. Venous pH runs about 0.03–0.04 below arterial. Labs set their own limits, so use the range printed on your report. Adult values only.","sources":[{"title":"Reference intervals for venous blood gas measurement in adults","url":"https://doi.org/10.1515/cclm-2020-1224","publisher":"Clinical Chemistry and Laboratory Medicine 2021;59(5):947-954","year":2021},{"title":"Reference Intervals for Venous Blood Gas in Healthy Adults: A One-Year Prospective Study","url":"https://doi.org/10.7759/cureus.74223","publisher":"Cureus 2024;16:e74223","year":2024},{"title":"The Role of Venous Blood Gas Analysis in Critical Care: A Narrative Review","url":"https://doi.org/10.3390/medicina61081337","publisher":"Medicina (Kaunas) 2025;61:1337","year":2025},{"title":"Laboratory Bulletin: Changes to Blood Gas Reference Intervals and Critical Values","url":"https://www.albertahealthservices.ca/assets/wf/lab/if-lab-hp-lab-bulletin-changes-to-blood-gas-reference-intervals-and-critical-values.pdf","publisher":"Alberta Precision Laboratories (Alberta Health Services)","year":2021}]}],"review":{"status":"ai-verified","label":"AI-verified against cited sources. Awaiting expert review","lastReviewed":"2026-10-03"},"summary":"How acidic or basic your blood is, measured in a sample from a vein. It runs a little lower than the arterial pH.","url":"https://bloodtesttracker.com/markers/ph-venous","notice":"Information, not medical advice. Ranges differ between labs, so the range on your own report is the one your result is judged against."}