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:
The measurement of direct (conjugated) bilirubin used in conjunction with the measurement of total bilirubin can give an estimate of the amount of unconjugated (indirect) bilirubin present. The relative amounts of direct and indirect bilirubin in the circulation are of value in helping to determine likely causes of raised total bilirubin.
Specimen container paediatric:
Serum (SST or plain tube)
Specimen container adult:
Serum (SST or plain tube)
Minimum volume paediatric:
0.5 mL blood
Minimum volume adult:
1 mL blood
Sample stability:
Unseparated: day of collectionSeparated: 1 day at room temperature, 7 days at 4ºC, 6 months at -20C
Reference ranges:
Up to and including 30 days: 0 – 10 umol/LOver 30 days: 0 – 4 umol/LAs percentage of total bilirubin: less than 10 %
Other info:
lithium heparin plasma sample also acceptable