Aliquot from a random urine sample.
Onsite [NJH]: Transport to lab within 1 hour.
Preferred volume: 1 mL
Minimum volume: 300 mcL aliquot from a random urine sample.
Offsite: Frozen. Send urine aliquot Priority Overnight via FedEx and in a well insulated container on dry ice.
8 hours at room temperature.
24 hours refrigerated at 2-8°C
>24 hours frozen at -20°C
Random urine sample is the only acceptable sample type.
Monday - Friday
Ion Selective Electrode
Adult: 110-250 mmol/24 hours.
Pediatric: 110-250 mmol/24 hours.