---
title: "Why Can an A1C Result Differ from a Fasting Glucose Test?"  
description: "Why Can an A1C Result Differ from a Fasting Glucose Test?"  
author: "Nayeem Kabir"  
published: 2026-10-22  
canonical: https://answers.mindstick.com/qa/118061/why-can-an-a1c-result-differ-from-a-fasting-glucose-test  
category: "Mix Category"  
tags: ["healthcare", "diabetes", "Blood Tests"]  
reading_time: 1 minute  

---

# Why Can an A1C Result Differ from a Fasting Glucose Test?

I’ve seen cases where a fasting glucose result looks normal, but the A1C is higher than expected—or the other way around. Since **[A1C and fasting glucose](https://answers.mindstick.com/qa/117702/why-can-fasting-glucose-and-a1c-point-to-different-blood-sugar-patterns)** are both used to assess blood sugar, what different time periods or conditions does each test reflect?

How should someone discuss a mismatch with their clinician, especially if the tests were taken at different times or there are other health factors involved?


---

Original Source: https://answers.mindstick.com/qa/118061/why-can-an-a1c-result-differ-from-a-fasting-glucose-test

Copyright © MindStick Software Pvt. Ltd. This Markdown version is provided for developers, AI systems, and offline reading.