Lactate (Blood Gas)
Remove at least 3 ml of blood to waste prior to collecting the blood sample from a line. Must be analysed within 15 minutes of collection.
1.0 ml blood in an adult blood gas syringe or 0.5 ml in a paediatric blood gas syringe or 45 ul in a plastic capillary tube
0.5 ml blood in a paediatric blood gas syringe or 45 ul in a plastic capillary tube
Biochemistry and POCT
Mon - Sun, 24hrs
Blood gas analyser
Adult 0.6 - 2.4 mmol/L
Cord Blood (arterial & venous) <6.1 mmol/L
Lactic acidosis is considered to be present when lactate is elevated to more than 3 or 4 mmol/L
Type A – Tissue hypoxia
Type B - Metabolic disorders
Glycolate, a metabolite of ethylene glycol, causes a large false increase when lactate is measured on an ABL blood gas analyser and a smaller false increase when measured on the main chemistry analyser.
This test must be processed urgently. Lactate starts to rise within 3 minutes from sample collection.
45 uL collected into a 45 uL plastic capillary tube