Final answer:
A critical value after a 2-hour post prandial refers to the blood glucose level measured 2 hours after a meal. It should range between 100-140 mg/100 ml or 5.5-8.0 mmols/L. Consistently higher levels may indicate diabetes mellitus or impaired glucose tolerance.
Step-by-step explanation:
A critical value after a 2-hour post prandial refers to the blood glucose level measured 2 hours after a meal. In normal individuals, the blood glucose level should range between 100-140 mg/100 ml or 5.5-8.0 mmols/L. If the blood glucose level is consistently higher than this range, it may indicate diabetes mellitus or impaired glucose tolerance.