laboratory diagnostic - biochemistry - Carnitine free and total, urine, 24hrs urine 5ml frozen. This analysis is only performed with Heparinised Plasma in parallel, code L16LD1172, The samples must be frozen within 1 hour after collection and must be sent in the frozen samples container, Tandem mass spectrometry (MS/MS), ssso, todylaboratories®, bmn, code L16LD1173