GPT and preeclampsia: However, the South Africa maternity care guidelines recommend less stringent monitoring of weekly platelet and twice-weekly cardiotocography in PE.19 Despite the controversies about the ‘ideal’ list of investigations for PE,20 the authors’ suggest that at least serum creatinine, haemoglobin concentration, AST, LDH, ALT, platelets and urine protein:creatinine ratio (CHALAPU) should be performed when the diagnosis of gestational hypertension, TGH or PE is being made or excluded.