Skip to main content
Your session has expired. Reloading...

HbA1c Blood Test

HbA1c is the gold standard for assessing diabetes risk and long-term metabolic health. Regular monitoring is essential for proactive prevention.

Doctor's Assessment Included

When is this value abnormal?

Decision limits per result, in mmol/mol
Result Value (mmol/mol)
Low < 20
Normal 20–42
Borderline 42–48
Elevated ≥ 48

The NHG advises against using HbA1c to detect or diagnose diabetes. In the Netherlands the diagnosis is made with fasting glucose. An HbA1c of 48 mmol/mol or higher fits diabetes and must be confirmed with a second measurement; an HbA1c below 48 does not rule out diabetes.

Source: Nederlands Huisartsen Genootschap Reference population: Dutch adults (SHO reference values, IFCC)

Source: SHO Reference population: Dutch adults (SHO reference values, IFCC)

Reference ranges may vary between laboratories. When you order a test, a BIG-registered doctor assesses your personal results in context. For treatment decisions, discuss your results with your GP.

HbA1c (Glycated Hemoglobin): what this test measures

This test measures the percentage of haemoglobin in red blood cells that has glucose attached to it. Higher percentages indicate higher average blood sugar over the preceding months.

HbA1c (Glycated Hemoglobin): why this value matters

HbA1c provides a long-term view of blood sugar control, unlike fasting glucose which reflects a single point in time. It is essential for diabetes diagnosis and management. Consult your healthcare provider.

HbA1c (Glycated Hemoglobin): how the blood test works

Referral
No GP referral needed. After the order we arrange the referral through ZorgDomein, within one business day; orders after 17:00 or at the weekend start on the next business day. ZorgDomein emails a barcode, and that barcode is what the draw site needs.
The draw
A blood draw from a vein in the arm, at a partner laboratory's draw site. No home kit, no finger prick.
Which test
on its own €27,- HbA1c Test · €84,- · Diabetes · €69,- · InsideTracker Gut Health · €129,- · InsideTracker Cognition · €159,-
Where
650+ draw sites run by independent laboratories across the Netherlands. Draw sites

HbA1c (Glycated Hemoglobin): when is testing worthwhile?

Testing is recommended for routine diabetes screening, monitoring diabetes management, or evaluating risk of pre-diabetes. It does not require fasting, making it convenient for any time of day.

HbA1c (Glycated Hemoglobin): symptoms of a high or low value

Low Levels

Very low HbA1c may indicate frequent hypoglycaemia episodes or certain blood conditions. It should be discussed with your healthcare provider.

High Levels

Elevated HbA1c may not cause immediate symptoms but indicates poor long-term blood sugar control. Over time, this may be associated with increased risk of cardiovascular, nerve, kidney, and eye complications.

HbA1c (Glycated Hemoglobin): what to do about an abnormal value

Male

If Low

Low HbA1c is normal and indicates good blood sugar control.

If High

Elevated HbA1c indicates diabetes or poor blood sugar control. Consider lifestyle changes and treatment.

Female

If Low

Low HbA1c is normal and indicates good blood sugar control.

If High

Elevated HbA1c indicates diabetes or poor blood sugar control. Consider lifestyle changes and treatment.

HbA1c (Glycated Hemoglobin): lifestyle and this value

Consistent carbohydrate management, regular physical activity, maintaining a healthy weight, and managing stress are key to keeping HbA1c within a healthy range. Small, sustained changes are more effective than drastic diets.

HbA1c (Glycated Hemoglobin): frequently asked questions

Do I need to fast for an HbA1c test?

No, HbA1c does not require fasting. It measures average blood sugar over months, so a single meal will not significantly affect the result.

How often should I test HbA1c?

For diabetes monitoring, testing every 3-6 months is common. For screening, your healthcare provider will recommend an appropriate frequency.

What is a normal HbA1c range?

Reference ranges vary by guideline. Your healthcare provider can interpret your result and explain what it means for your individual health.

HbA1c (Glycated Hemoglobin): sources

  1. SHO Centra voor Medische Diagnostiek. Referentiewaarden O.5.08/01a (versie 054). Carnitine totaal en vrij carnitine als afzonderlijke componenten. Geraadpleegd 14 juli 2026. (retrieved 2026) sho.nl
  2. Nederlands Huisartsen Genootschap. NHG-Standaard Diabetes mellitus type 2 (M01). Gepubliceerd september 2018, laatste aanpassing februari 2026. "Indien een HbA1c van 48 mmol/mol (6,5%) of hoger wordt gevonden, spreekt men ook van diabetes." (retrieved 2026) richtlijnen.nhg.org

Test Products

This marker is included in the following test panels.

Medical reviewer

Medical standards

Dr. Naimi oversees the medical standards behind our content and assessments.

Medical policy
CIBG Ministerie van Volksgezondheid,
Welzijn en Sport
Official BIG registration BIG 49928676701 Opens in a new tab

HbA1c (Glycated Hemoglobin)

€27,-