Hemoglobin A1c (HbA1c) with 24-hour fluid collection

Why This Test Is Done

Doctors order an HbA1c test to monitor how well diabetes is being controlled. Unlike daily blood sugar checks, this test provides a broader picture of your average blood sugar levels over months, helping prevent complications like nerve damage or kidney disease.

How the Test Works

A small blood sample is taken from your arm. The test measures the percentage of hemoglobin molecules that are coated with sugar (glycated hemoglobin). This reflects your blood sugar levels over time, as red blood cells live for about 3 months.

A blood sample is drawn from your arm, similar to a regular blood test. If this is a 24-hour fluid collection, you may need to provide a urine sample over a full day, though HbA1c itself is not urine-based—this qualifier may indicate a related diagnostic context.

Note: The 24-hour qualifier here likely refers to a broader clinical context (e.g., assessing hydration or metabolic status) rather than the test itself, as HbA1c is a blood-based test. Clarification from your provider is recommended.

What the Results Mean

Results are typically reported as a percentage (e.g., 6.5%). Higher percentages indicate higher average blood sugar levels, which may signal poor diabetes control. Lower percentages suggest better control. Exact values should be discussed with your healthcare provider.