Assessment of haemoglobin measurement by several methods – blood gas analyser, capillary and venous HemoCue ® , non‐invasive spectrophotometry and laboratory assay – in term and preterm infants

(non-invasive haemoglobin measurement). Perfusion index, body weight and fetal haemoglobin concentration did not affect the accuracy of the alternative measurement methods, and these were successfully applied in term and preterm infants. However, the accuracies of non-invasive haemoglobin measurement and HemoCue of capillary blood especially lacked sufficient agreement with that of the reference method to recommend these methods for clinical decision making.