Blood Sugar Report: How to Read Fasting, PP & Random
A blood sugar report shows how much glucose is in your blood. Fasting, post-meal (PP) and random tests are taken at different times, so each has its own values.
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Three blood sugar tests
Fasting
Taken after 8 to 10 hours without food.
Post-meal (PP)
Taken 2 hours after you start a meal.
Random
Taken at any time of day, without fasting.
Blood sugar values for adults
Labs differ a little. Always compare with the range printed on your report.
| Test | Value | Unit | What it tells you |
|---|---|---|---|
| Fasting blood sugar | |||
| Usual | 70–99 | mg/dL | The usual fasting value. |
| Prediabetes | 100–125 | mg/dL | Higher than usual. Your doctor may repeat it. |
| Diabetes range | 126 or more | mg/dL | Doctors confirm with a repeat test or HbA1c. |
| Post-meal (PP, 2 hours) | |||
| Usual | Below 140 | mg/dL | The usual value 2 hours after a meal. |
| Prediabetes | 140–199 | mg/dL | Higher than usual. Your doctor may repeat it. |
| Diabetes range | 200 or more | mg/dL | Doctors confirm with a repeat test or HbA1c. |
| Random and related tests | |||
| Random blood sugar | 70–140 | mg/dL | The usual value at any time of day. |
| HbA1c | 4.0–5.6 | % | Your average sugar over about 3 months. |
| Urine sugar | Nil | Usually absent in urine. | |
Ranges from the NirogGyan biomarker library. Updated .
What a blood sugar report looks like
The same results in the usual lab layout, and as a NirogGyan Smart Report.
Numbers and ranges in rows
Each value on our report slider
How to read your sugar report
Check when the sample was taken
Fasting, PP and random samples each have their own values.
Find your result
Blood sugar is printed in mg/dL.
Compare with the range
Use the range for the type of sample.
Look for H or L
A flag marks a value outside the range. Your doctor reads what it means.
Blood sugar report questions
What is fasting blood sugar?
It is your blood glucose after no food or drink except water for 8 to 10 hours, usually tested in the morning.
What is PP blood sugar?
PP means post-prandial, or after a meal. The sample is taken 2 hours after you start eating.
What is random blood sugar?
It is blood glucose tested at any time of day, without fasting.
Is HbA1c the same as a blood sugar test?
HbA1c shows your average sugar over about 3 months. A blood sugar test shows the level at the moment the sample was taken.
How long should I fast before a sugar test?
Most labs ask for 8 to 10 hours of fasting for a fasting sugar test. Water is usually allowed.
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Upload your reportThis page explains how to read a lab report. It does not replace advice from your doctor. All sample values are made up.