Indicator Explainer
Acid Phosphatase
A family of phosphatases that add monophosphates to substrates. The optimal pH for activity of these enzymes is below 7.
This page explains what the indicator is and how results are interpreted in general terms. Reference ranges depend on the laboratory, the method, and your own situation — no single “normal value” applies to everyone. This page is health information, not a diagnosis. For symptoms, treatment, or urgent concerns, contact a healthcare professional.
When it is tested
Source: National Cancer Institute, NCI Thesaurus 26.09d, C120022. NCI definition, reproduced without modification under CC BY 4.0. Source identity and definition checked automatically on 2026-10-20. No individual clinical interpretation or human reviewer is asserted.
Reading results
Reference intervals and interpretation depend on the laboratory, specimen, method and clinical context. This source definition is educational information; it does not establish a diagnosis, product approval or suitability for an individual.
Also Known As
Related Tests
Tests that measure or involve this indicator.
References
- NCI Thesaurus 26.09d — Acid Phosphatase (C120022)
- Source: National Cancer Institute, NCI Thesaurus 26.09d, C120022. NCI definition, reproduced without modification under CC BY 4.0.
- A tomato purple acid phosphatase SlPAP26b rewires tissue-specific Pi remobilization through differential perturbation of SlPHL1-SlSPX2 levels. — J Exp Bot, 2026-09-26 (PMID 42790884; literature)