Turnaround times
The quoted turnaround time is from sample receipt in the laboratory, to results authorisation in the Laboratory Information Management system. The times do not include transport of specimen to the laboratory or the administrative process to print and post/email reports. Service users must allow for transport and reporting time when ordering tests.
Clinical background:
Investigation of renal stone formers
Specimen container paediatric:
Plain universal container (random urine sample)
Specimen container adult:
Plain universal container (random urine sample), plain or acid-rinsed bottle (24 hour urine collection)
Minimum volume paediatric:
2 mL for randome urine
8 mL for 24h collection
Minimum volume adult:
25 mL aliquot of the 24h collection
Sample stability:
Store sample at 4°C
Transport requirements:
Post
Reference ranges:
– Citrate: creatinine ratio:
0.04-0.33 mmol/mmol (male)
0.11-0.55 mmol/mmol (female)
– Urine citrate output = 1.3 – 6.0 mmol/24hr