What testing should be performed in an asymptomatic patient with random serum glucose level that suggests diabetes mellitus (DM)(>140 mg/dL)?

Updated: Oct 23, 2019
  • Author: Romesh Khardori, MD, PhD, FACP; Chief Editor: George T Griffing, MD  more...
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Answer

In asymptomatic patients whose random serum glucose level suggests diabetes (>140 mg/dL), an FPG or HbA1c level should be measured. An FPG level of 100-125 mg/dL is considered an impaired fasting glucose (IFG), and an FPG level of less than 100 mg/dL is considered a normal fasting glucose. However, an FPG of 91-99 mg/dL is a strong independent predictor of future type 2 diabetes. [108]


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