Glucose (Serum)
The Glucose (Serum) test measures the level of glucose in the blood. This test is commonly ordered by clinicians to assess a patient's blood sugar levels, which can help in the diagnosis and management of conditions such as diabetes, insulin resistance, and hypoglycemia. Clinicians may order the Glucose (Serum) test when a patient presents symptoms like excessive thirst, frequent urination, or unexplained weight loss. It is also used for routine screening in at-risk populations, monitoring glucose levels in diagnosed patients, and evaluating metabolic health.
Test Essentials
Specimen Required
2 mL blood (light green). Pediatrics: 0.5 mL.
Test Category
Chemistry
Turnaround Time
Results for the Glucose (Serum) test are typically available within 24–48 hours after sample collection.
Clinical Information
Clinical Significance
Abnormal results from the Glucose (Serum) test can indicate various health issues. High glucose levels may suggest diabetes or prediabetes, while low levels may point to hypoglycemia or other metabolic disorders. The diagnostic value of the Glucose (Serum) test lies in its ability to help your healthcare provider assess your glucose metabolism and overall health. Remember, only a healthcare provider can interpret the results in the context of your individual health situation.
Reference Ranges
Reference ranges for glucose levels may vary by age, sex, and the laboratory's testing methods. Generally, normal fasting glucose levels are considered to be between 70 and 99 mg/dL, while levels above this range may indicate potential issues. It is important to interpret these results in consultation with your healthcare provider, as they can provide context based on your overall health and medical history.
Sample Preparation
Before your Glucose (Serum) test, you may be asked to fast for at least 8 hours to ensure accurate results. This means you should not eat or drink anything except water during this period. If you are taking any medications, it is important to consult your healthcare provider, as some medications may affect the test results. In most cases, no special preparation is needed beyond fasting, but always follow your doctor's specific instructions.
Related Tests
Code: 0212
Code: 0230
Code: P0204
Frequently Asked Questions
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