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Below is a selection of reference ranges for various haematological and biochemical investigations. Always consult with your local laboratory, as ranges often differ between labs.



Full blood count¹

Haemoglobin (♂ 130–180 g/ L ) //  (♀ 115–165 g/ L)

White cell count (WCC)

  • Total 3.6–11.0 × 109/ L
  • Neutrophils –  1.8–7.5 × 109/ L
  • Lymphocytes – 1.0–4.0 × 109/ L
  • Monocytes –  0.2–0.8 × 109/ L
  • Eosinophils –  0.1–0.4 × 109/ L
  • Basophils – 0.02–0.10 × 109/ L

Platelet count 140–400 × 109/ L

Red cell count (RCC) (♂ 4.5–6.5 × 1012/ L) // (♀ 3.8–5.8 × 1012/ L)

Haematocrit (♂ 0.4–0.54L/ L) // (♀ 0.37–0.47L/ L)

Mean cell volume (MCV) – 80–100 fL

Mean corpuscular haemoglobin (MCH)  – 27-32 (pg)/cell

Reticulocyte count  0.2 – 2%


Coagulation¹

Prothrombin time (PT) – 10–14 seconds

Activated Partial Thromboplastin Time (APTT) – 24–37 seconds

Fibrinogen – 1.50 – 4.50 seconds


Haematinics¹

Ferritin –  (♂ 25–350 ng/mL) // (♀ 10-300 ng/mL)

Vitamin B12 – 180-1000 pg/mL

Folate – >4.0 ng/mL


Biochemistry ¹

Urea and electrolytes (U&Es)

Na+ – 133–146 mmol/ L

K+ – 3.5–5.3 mmol/ L

Ca2+(adjusted) – 2.2-2.6 mmol/L

Mg2+ – 0.7–1.0 mmol/ L

Urea – 2.5 – 7.8 mmol/L

Creatinine – (♂ 59–104 μmol/ L) // (♀ 45–84 μmol/ L)

 

Liver function tests (LFTs)

Alkaline phosphatase (ALP) – 30–130 U/ L

Alanine aminotransferase  (ALT) (♂ <41 U/ L) // (♀<33 U/ L)

Bilirubin <21 μmol/ L

GGT (♂ <60 U/ L) // (♀<40 U/ L)

Albumin  35–50 g/ L

 

Other

Creatine kinase (CK) – (♂ 40–320 U/ L) // (♀ 25–200 U/ L)

Lactate dehydrogenase (LDH) – 240–480 U/ L

Lactate (plasma) – 0.5 – 2.2 mmol/L

Urate – (♂ 200–430 μmol/ L) // (♀ 140–360 μmol/ L)

Amylase – 28–100 U/ dL


Lipids

Cholesterol – < 5 mmol/L

Triglyceride – 0.55–1.90 mmol/ L

LDL – < 3mmol/L

HDL – > 1 mmol/L

Cholesterol/HDL – < 4


Inflammatory markers

ESR

  • Male – (≤49 years old = 1-7)   (≥50 years old = 2-10)
  • Female – (≤49 years old = 3-9)   (≥50 years old = 5-15)

 

CRP – < 5mg/L


Endocrinology values

TSH – 0.4–4.0 mU/ L ²

Free T4 – 9 – 24 pmol/L

Free T3 – 3.5 – 7.8 pmol/L

 

Growth hormone (random) – (♂< 5 ng/mL) // (♀< 10 ng/mL).

Cortisol (random) – 137 – 429 nmol/ L

 

Testosterone

  • Male <50 – 10-45 nmol/L
  • Male >50 – 6.2-26 nmol/L

Blood glucose³

Fasting blood glucose – 4.0 to 6.0 mmol/L

Postprandial (2 hours after eating) – up to 7.8 mmol/L

HbA1c – < 42 mmol/mol (6.0%)


Arterial blood gas

pH – 7.35 – 7.45

pO2 – 11 – 13 kPa

pCO2 – 4.7 – 6.0 kPa

HCO3 – 22 – 26 mmol/L

Base Excess – (-2 to +2 mmol/L)


References

1. East Sussex Healthcare – Laboratory – http://www.esht.nhs.uk/EasysiteWeb/getresource.axd?AssetID=375157

2. British Thyroid Foundation – http://www.btf-thyroid.org/information/leaflets/34-thyroid-function-tests-guide

3. Diabetes UK – http://www.diabetes.co.uk/diabetes_care/blood-sugar-level-ranges.html