---
title: "Does the Express Inhibitor Test check for all inhibitors?"
description: "Yes! The Express Inhibitor Test is a universal test that will check for the presence of all molybdate based inhibitors within the system water."
url: https://help.fernox.app/en/articles/84-does-the-express-inhibitor-test-check-for-all-inhibitors
collection: "Understanding Results"
updated: 2026-10-05
language: en
alternates: [es, de, fr, nl, nl-be, fr-be, ro, cs, sv, pl, sk, tr]
---

# Does the Express Inhibitor Test check for all inhibitors?

Yes! The Express Inhibitor Test is a universal test that will check for the presence of all molybdate based inhibitors within the system water.