What reading indicates an abnormal glucose level at the 1-hour mark of the 3-hour glucose test?

What reading indicates an abnormal glucose level at the 1-hour mark of the 3-hour glucose test?

• A. Less than 92 mg/dL
• B. Less than 140 mg/dL
• C. Less than 180 mg/dL
• D. Less than 153 mg/dL

Answer: (C)

In the context of a 3-hour glucose tolerance test, which is typically conducted to assess for gestational diabetes, an abnormal glucose reading at the 1-hour mark is defined by the established criteria for diagnosing this condition. A reading of less than 180 mg/dL at the 1-hour mark indicates a normal result. When a reading is 180 mg/dL or higher, this suggests that the body is not managing glucose effectively, indicating a potential issue with insulin response or glucose metabolism. Therefore, a level of less than 180 mg/dL at the 1-hour mark is considered acceptable, marking it as abnormal only if it reaches that threshold or more. The other thresholds like less than 92 mg/dL, less than 140 mg/dL, and less than 153 mg/dL correspond to earlier components of the test or the overall criteria for diabetes management and screening but do not specifically indicate the abnormality necessary at the 1-hour mark in the three-hour test protocol. Therefore, recognizing that a result below 180 mg/dL signifies a normal glucose level helps clarify why the reading indicating an abnormal glucose level is 180 mg/dL or higher.

In the context of a 3-hour glucose tolerance test, which is typically conducted to assess for gestational diabetes, an abnormal glucose reading at the 1-hour mark is defined by the established criteria for diagnosing this condition. A reading of less than 180 mg/dL at the 1-hour mark indicates a normal result.

When a reading is 180 mg/dL or higher, this suggests that the body is not managing glucose effectively, indicating a potential issue with insulin response or glucose metabolism. Therefore, a level of less than 180 mg/dL at the 1-hour mark is considered acceptable, marking it as abnormal only if it reaches that threshold or more.

The other thresholds like less than 92 mg/dL, less than 140 mg/dL, and less than 153 mg/dL correspond to earlier components of the test or the overall criteria for diabetes management and screening but do not specifically indicate the abnormality necessary at the 1-hour mark in the three-hour test protocol. Therefore, recognizing that a result below 180 mg/dL signifies a normal glucose level helps clarify why the reading indicating an abnormal glucose level is 180 mg/dL or higher.