What is the clinical significance of the following lab results: hyperglycemia (Glucose 115 mg/dL), normal electrolyte levels (Sodium 138 mEq/L, Potassium 4.1 mEq/L, Chloride 101 mEq/L, Carbon Dioxide 21 mEq/L, Anion Gap 16 mEq/L), normal renal function (Blood Urea Nitrogen 12 mg/dL, Creatinine 0.64 mg/dL, Estimated Glomerular Filtration Rate (EGFR) (MDRD) >60), and normal liver function (Alkaline Phosphatase 85 U/L, Aspartate Aminotransferase (AST) 30 U/L, Alanine Aminotransferase (ALT) 31 U/L)?

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Last updated: April 6, 2025 • View editorial policy

From the Guidelines

The patient's glucose level is elevated at 115 mg/dL, indicating prediabetes or possible diabetes, and I recommend following up with additional testing, specifically a hemoglobin A1C test, and implementing lifestyle modifications immediately. The lab results show mostly normal values with the notable exception of the glucose level. According to the American Diabetes Association guidelines 1, a fasting glucose level between 100-125 mg/dL indicates prediabetes, while a level ≥126 mg/dL suggests diabetes when confirmed on repeat testing. Given the patient's glucose level of 115 mg/dL, it is essential to determine whether this was a fasting sample to accurately interpret the results.

  • The patient's electrolyte levels, including sodium, potassium, chloride, and carbon dioxide, are within normal limits.
  • Kidney function, as indicated by blood urea nitrogen and creatinine levels, is also within normal limits, with an estimated glomerular filtration rate (eGFR) >60 mL/min/1.73m².
  • Liver function tests, including alkaline phosphatase, AST, and ALT, are within normal limits.
  • Protein levels, including total protein, albumin, and globulin, are within normal limits. However, the elevated glucose level requires attention, as early intervention can prevent progression to diabetes and its complications, including cardiovascular disease, neuropathy, nephropathy, and retinopathy. I recommend a hemoglobin A1C test to assess average blood glucose over the past 2-3 months, as well as lifestyle modifications, including regular physical activity, dietary changes, and weight management if needed, to improve glycemic control and reduce the risk of complications 2.

From the FDA Drug Label

The FDA drug label does not answer the question.

From the Research

Lab Results Analysis

  • The patient's lab results show a glucose level of 115 mg/dL, which is higher than the normal range of 70-99 mg/dL, indicating hyperglycemia 3, 4.
  • The patient's sodium, potassium, chloride, and carbon dioxide levels are within normal ranges.
  • The anion gap is 16, which is within the normal range of 7-16 mEq/L.
  • The blood urea nitrogen (BUN) and creatinine levels are within normal ranges, indicating normal kidney function.
  • The BUN/creatinine ratio is 18.8, which is within normal limits.
  • The patient's protein, albumin, and globulin levels are within normal ranges.
  • The albumin/globulin ratio is 1.4, which is within normal limits.
  • The bilirubin level is 0.6 mg/dL, which is within normal limits.
  • The calcium level is 9.9 mg/dL, which is within normal limits.
  • The alkaline phosphatase, AST, and ALT levels are within normal ranges, indicating normal liver function.
  • The eGFR (MDRD) is >60, indicating normal kidney function.

Diabetes Management

  • According to the American Diabetes Association (ADA) guidelines, a fasting glucose level of 115 mg/dL is considered hyperglycemic 3.
  • Self-monitoring of blood glucose is a critical element in diabetes management, and healthcare providers should work with patients to set blood glucose targets and interpret results 3, 4.
  • The measurement of blood glucose provides information on the effectiveness of blood glucose metabolism and guides interventions to achieve optimal glucose control 4.
  • Glucagon-like peptide 1 (GLP-1) receptor agonists and sodium-glucose transport protein 2 inhibitors have been shown to have beneficial effects on blood pressure and lipid profile, and may be considered as part of a comprehensive diabetes management plan 5.
  • Metformin is a commonly used glucose-lowering medication that works by reducing hepatic glucose production and increasing GLP-1 secretion, and may be considered as part of a diabetes management plan 6.

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This information is intended for healthcare professionals. Any medical decision-making should rely on clinical judgment and independently verified information. The content provided herein does not replace professional discretion and should be considered supplementary to established clinical guidelines. Healthcare providers should verify all information against primary literature and current practice standards before application in patient care. Dr.Oracle assumes no liability for clinical decisions based on this content.