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Normal blood values




Please note: normal values may differ between hospitals.  This is simply a guide.
Full blood count
  • Haemoglobin
    • Male = 13-18g/dL
    • Female = 11.5-16g/dL
  • Mean corpuscular (cell) volume (MCV) = 76-96fL
  • Mean corpuscular haemoglobin (MCH) = 27-31pg
  • White cell count (WCC) = 4-11×10^9/L
  • Platelet count = 150-400×10^9/L
Serum biochemistry
  • Sodium = 135-145mmol/L
  • Potassium = 3.5-5mmol/L
  • Chloride = 95-105mmol/L
  • Urea = 2.5-6.7mmol/L
  • Creatinine = 70-150umol/L
  • eGFR = >90
  • Glucose (fasting) = 3.5-5.5mmol/L
  • Calcium = 2.12-2.65mmol/L
  • Phosphate = 0.8-1.4mmol/L
  • Bicarbonate = 22-28mmol/L
  • Uric acid = 0.18-0.42mmol/L
  • Protein (total) = 60-80g/L
  • Albumin = 35-50g/L
  • Bilirubin = 3-17umol/L
  • Osmolality = 280-296mosmol/L
  • T4 = 70-140mmol/L
  • TSH = 0.5-5.7mU/L
Enzymes
  • Alkaline phosphatase = 30-150iU/L
  • Aspartate aminotransferase (AST) = 5-35iU/L
  • Alanine aminotransferase (ALT) = 5-35iU/L
  • Lactate Dehydrogenase (LDH) = 70-250iU/L
  • Gamma-glutamyl transpeptidase (GGT)
    • Male = 11-51U/L
    • Female = 7-33U/L
  • Creatine kinase = 25-195iU/L
  • Troponin T = <0.1ug/L
Tests for clotting
Three tests are normally carried out to assess clotting:
1) Platelet count
    • Deficiencies in platelets cause purpura (3-10mm)
2) Prothrombin Time (PT)
    • Normal = 12-15s
    • Measures extrinsic pathway and factors V, VII and X
    • Prolonged in vitamin K deficiency
    • Used to monitor anticoagulation with warfarin
    • International Normalised Ratio (INR)
      • Patient’s PT / Reference standard
      • e.g. 30 / 12 = 2.5 INR
3) Activated Partial Thromboplastin Time (APTT)
    • Measures intrinsic pathway and factors V, VII-XII
    • Used to monitor anticoagulation with heparin
    • Prolonged in haemophiliacs

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