Test Directory

Urine stone screen

Container for 24 Hour Timed Specimen (5 Litre)	Volume Range 5L Additive per Container Acidified
Container for 24 Hour Timed Specimen (5 Litre)	Volume Range 5L Additive per Container Plain

RIE

51 Little France Crescent
Old Dalkeith Road
Edinburgh
EH16 4SA

Telephone (Biochemistry): 0131 242 6806

SJH

Howden Road West
Howden
Livingston
West Lothian
EH54 6PP

Telephone (Biochemistry): 01506 52 3160/1

University College London Hospital

235 Euston Road
London
NW1 2BU

Telephone: 020 3456 7890

WGH

Crewe Road South
Edinburgh
EH4 2XU

Telephone (Biochemistry): 0131 537 1910/1

24 hour urine samples need to be taken into both an acidified and plain container.

Patients are advised to refrain from taking excessive amounts of vitamin C or vitamin C rich foods for 48h prior to collection.

Trak request: "24h Urine Stone Screen (Acidified)" AND "24h Urine Stone Screen (Plain)".

Urine stone screen includes calcium, phosphate, sodium, magnesium, urate, oxalate, cystine, citrate.

Oxalate and cystine analysis are performed at WGH only.

Citrate analysis is performed at UCLH.