---
title: "What if the test strip result doesn’t match the reference colours?"
description: "Use the app’s cropping and alignment tool to refine the photo, or select the closest matching value manually."
url: https://help.fernox.app/en/articles/79-what-if-the-test-strip-result-doesn-t-match-the-reference-colours
collection: "Testing Samples"
updated: 2026-10-05
language: en
alternates: [de, es, fr, nl-be, nl, fr-be, cs, pl, ro, sk, sv, tr]
---

# What if the test strip result doesn’t match the reference colours?

Use the app’s cropping and alignment tool to refine the photo, or select the closest matching value manually.