Glucose

Glucose levels in serum/plasma are mainly used for diagnosis and monitoring of diabetes mellitus.

Reference Ranges

Adults (fasting)
Venous plasma70 – 115 mg/dL3.9 – 6.4 mmol/L
Whole blood70 – 100 mg/dL3.9 – 5.6 mmol/L
Newborns
Cord Blood63 – 158 mg/dL3.5 – 8.8 mmol/L
1 h36 – 99 mg/dL2.0 – 5.5 mmol/L
2 h36 – 89 mg/dL2.2 – 4.9 mmol/L
5 – 14 h34 – 77 mg/dL1.9 – 4.3 mmol/L
10 – 28 h46 – 81 mg/dL2.6 – 4.5 mmol/L
44 – 52 h48 – 79 mg/dL2.7 – 4.4 mmol/L
Children and Adolescents (fasting)
1 – 6 years74 – 127 mg/dL4.1 – 7.0 mmol/L
7 – 19 years70 – 106 mg/dL3.9 – 5.9 mmol/L
Each laboratory should check if the reference ranges are transferable to its own patient population and determine own reference ranges if necessary. For diagnostic purposes, the results should always be assessed with the patient’s medical history, clinical examinations and other findings.

Increased in

  1. Diabetes mellitus
    • Maturity – onset (Adult)
    • Growth – onset (Juvenile)
  2. Pancreatitis
  3. Endocrine disorders, e.g. acromegaly, Cushing’s syndrome, thyrotoxicosis, phaeochromo­hyperaldosteronism
  4. Drugs, e.g. steroids, thiazides,oral contraceptives
  5. Chronic renal failure
  6. Stress
  7. I.V. Glucose infusion
  8. Post prandial

Decreased in

  1. Insulinoma
  2. Adrenal cortical insufficiency
  3. Hypopituitarism
  4. Extra – pancreatic neoplasm
  5. Severe liver disease
  6. Ethanol ingestion
  7. Drugs, e.g. sulfoylurea, salicylates, phenformin, insulin, etc.

Conversion

Use our conversion tool to quickly convert between conventional units and SI units

mg/dL
mmol/L

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