is 166 high blood sugar

A blood sugar level of 166 mg/dL is considered high, especially if measured fasting (before eating). Here’s a breakdown of blood sugar levels:

Blood Sugar Level (mg/dL) Category

Less than 100 Normal (fasting) 100–125 Prediabetes
126 or higher Diabetes

• After eating (postprandial): A level of 166 mg/dL is also elevated, as normal post-meal levels should be below 140 mg/dL.
• A1C Test: If your average blood sugar is consistently high, your A1C (a 3-month average) may indicate prediabetes (5.7–6.4%) or diabetes (6.5% or higher).

If you frequently see levels this high, consult a healthcare provider for further evaluation and management.