Understanding Discrepancies Between HbA1C and Fasting Blood Sugar Levels
‘Why are my HbA1C results 4.0 but FBS 121? The first test results were 4.3 and 111’
The Indian Express
Image: The Indian Express
A discrepancy between HbA1C levels and fasting blood sugar (FBS) readings can occur, as explained by Dr. Pranav Ghody, a consultant endocrinologist in Mumbai, India. While an HbA1C of 4.0 indicates good long-term glucose control, an FBS of 121 mg/dL falls into the prediabetes range, warranting further investigation and lifestyle adjustments.
- 01HbA1C reflects average blood sugar over 2-3 months, while FBS is a snapshot reading.
- 02An FBS of 121 mg/dL indicates prediabetes and should not be ignored.
- 03The dawn phenomenon can cause elevated fasting glucose levels.
- 04Lab variations and factors like stress or poor sleep can affect test results.
- 05Lifestyle changes are crucial for managing blood sugar levels.
Advertisement
In-Article Ad
Discrepancies between HbA1C and fasting blood sugar (FBS) levels can be concerning. Dr. Pranav Ghody, a consultant endocrinologist at Wockhardt Hospitals in Mumbai, explains that while an HbA1C of 4.0 suggests good average blood sugar control, an FBS of 121 mg/dL indicates a prediabetic state. This situation can arise from various factors, including the dawn phenomenon, which leads to natural increases in blood sugar during early morning hours due to hormonal changes. Other reasons for the mismatch could include lab variations or pre-test conditions such as stress, poor sleep, or recent illness. Dr. Ghody emphasizes the importance of not relying on a single measurement and suggests repeating tests for confirmation. Additionally, lifestyle modifications—such as balanced meals, stress management, and good sleep hygiene—are essential for maintaining healthy blood sugar levels. If discrepancies persist, further evaluations like post-meal blood sugar monitoring may be necessary.
Advertisement
In-Article Ad
Individuals with elevated fasting blood sugar should be aware of their health status and consider lifestyle changes to mitigate risks associated with prediabetes.
Advertisement
In-Article Ad
Reader Poll
How often do you monitor your blood sugar levels?
Connecting to poll...
More about Wockhardt Hospitals
Read the original article
Visit the source for the complete story.





