Which laboratory test is essential for diabetes screening in older adults?

The Hemoglobin A1c test is considered essential for diabetes screening in older adults because it provides an average of blood glucose levels over the past two to three months. This is particularly advantageous for older adults who may have fluctuating blood sugar levels or who might not be able to present for fasting tests due to health or mobility issues.

In addition, the A1c test does not require fasting, making it more convenient for patients. It is effective in identifying individuals who might be pre-diabetic or have diabetes, which is critical for early intervention and management of the condition. Regular screening with this test helps in monitoring long-term glucose control, which is especially important in the aging population that may have a higher risk for complications associated with diabetes.

While the fasting glucose test is also valuable in diabetes diagnosis, it requires the patient to fast for a specific period, which can pose a challenge for older adults. Other tests like the lipid panel and complete blood count serve different purposes and are not primarily focused on detecting diabetes. Thus, the Hemoglobin A1c test stands out as the most relevant and practical option for diabetes screening in older adults.