Glucose, Fasting

Fasting Required
CPT: 82947
Metabolic

What This Test Measures

Blood sugar level after 8-12 hours of fasting; primary screening test for diabetes.

Preparation

Fasting required (8-12 hours)
Fasting 8–12 hours required. Water is fine. Even small amounts of food, juice, or gum can affect results.

General guidelines only. Requirements vary by lab and individual. Confirm with your provider before adjusting any medications.

Turnaround Time

Varies by lab

Clinical Notes

<100 mg/dL normal; 100-125 prediabetes; >=126 diabetes (requires confirmation)

ICD-10 Codes

Common diagnosis codes associated with this test. Codes are assigned by your provider.

E10.9Type 1 diabetes mellitus without complications
E11.9Type 2 diabetes mellitus without complications
R73.09Other elevated blood glucose level
Z13.1Encounter for screening for diabetes mellitus

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Lab Codes

Proprietary codes used by each lab for this test.

BioReference Laboratories
0095-0(order_code)
CPL
2217(order_code)
LabCorp
001032(order_code)
Mayo Clinic Labs
GLUF(order_code)
Quest Diagnostics
483(order_code)

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For informational purposes only

This page is for educational and research purposes only and does not constitute medical advice, diagnosis, or treatment recommendations. ICD-10 and CPT codes are assigned by your healthcare provider. Always consult a qualified healthcare provider before ordering any lab test or making decisions about your health.