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For 24 hour urine sodium, urine should be collected into a brown 3L urine bottle For random urine sodium, send in a plain white top narrow tube Storage
Sample requirements Preferred sample is a complete 24 hour urine collection taken into a 3L brown bottle:- For very young children, a random urine sample
bone or bowel disease, chronic UTI, gout nephrocalcinosis) Sample requirements Preferred sample is a complete 24 hour urine collection taken into a 3L
For children and neonates, a minimum of 1 ml taken into a Teklab tube For urine copper, a 24h urine sample collected into a plain brown 3L
For 24 hour urine potassium, collect urine into a 3L brown bottle:- For random urine potassium, send urine in a plain white narrow tube Storage/transport
For urine magnesium levels in adults a 24 hour urine collected into a 3L brown bottle:- Urine magnesium:creatinine ratios can be measured in children
For adults and children, all urine passed during a complete 24 hour time period, collected into a brown 3L bottle For neonates, a minimum 5 ml urine
For urine calcium in adults a 24 hour urine collected into a 3L brown bottle is required.
For neonates, blood taken into a 0.8mL minicollect lihium heparin tube For 24 hour urine cortisol, a complete 24 hour urine in a 3L