For clinical reference only — does not replace local trust guidelines or clinical judgement.
‹ Blood Results
Blood Results

Hypocalcaemia

Hypocalcaemia

Severity
Range
  • Mild
    Adj Ca 2.00–2.19
  • Moderate
    Adj Ca 1.90–1.99
  • Severe
    Adj Ca < 1.90 or symptomatic
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Parathyroid Causes

Post-thyroidectomy / parathyroidectomyHypoparathyroidism (autoimmune, congenital)Pseudohypoparathyroidism
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Vitamin D Causes

Deficiency / malabsorptionCKD (low 1,25-vit D)Liver disease
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Magnesium Causes

Hypomagnesaemia (impairs PTH release)
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Other Causes

Acute pancreatitisMassive transfusion (citrate)Tumour lysis / rhabdomyolysisSepsisDrugs — bisphosphonates, denosumab, cinacalcet, PPIs