Appropriate Tests


The magnitude of acute blood loss and the likely cause should be determined on clinical grounds.

The initial haemoglobin may be within the reference interval after acute severe haemorrhage.

Full blood count (PCV), Blood group and antibody screen, Crossmatch (compatibility testing).

See also Blood transfusion - recipient testing.

Endoscopy with biopsy, as appropriate.

Gastritis/gastric erosions


Gastric ulcer, especially

  • Peptic ulcer
  • Gastric carcinoma


See under Peptic ulcer.

Duodenal ulcer 

See under Peptic ulcer.

Oesophageal varices


Oesophageal carcinoma


Oesophagitis, oesophageal ulcer


Mallory Weiss lesion


Vascular malformation