Table 1

List of urgent samples in cryobox

Chemistry	Lactate.
	Arterial blood gas.
	Ionised calcium.
	Ammonia.
	Adrenocorticotropic hormone.
	Beta-hydroxybutyrate.
	Bicarbonate.
Microbiology	Cerebrospinal fluid samples.
Microbiology	Influenza/respiratory syncytial virus PCR.
Haematology	Activated partial thromboplastin time for patients on heparin therapy.