Glossary

What is mg/dL?

mg/dL stands for milligrams per decilitre. It tells you how many milligrams of a substance are in one-tenth of a litre of blood, and it's the unit most Indian labs use for blood sugar and cholesterol.

Written by Poshan Labs. Sources are named on the page. Last updated 26 October 2026.

mg/dL on your report

The CDC lists these fasting blood sugar ranges:

  • 99 mg/dL or below: normal
  • 100 to 125 mg/dL: prediabetes
  • 126 mg/dL or above: diabetes

On a 2-hour glucose tolerance test, 140 to 199 mg/dL suggests prediabetes and 200 mg/dL or more suggests diabetes. Each lab prints its own reference range, which can vary slightly.

mg/dL: milligrams per decilitre.

Where you'll see mg/dL

Most of the numbers on a diabetes or cholesterol report are in mg/dL.

Knowing the unit helps you:

  • compare one report with the next
  • follow your doctor's targets

Some glucometers, apps and UK or European advice use a different unit, mmol/L, and the numbers look completely different. Always check which unit you're reading before you compare or worry.

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