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 anti-TNF alpha biologicals is a useful tool in managing patients who fail to respond (primary failure) or who go on to lose response (secondary failure) to treatment. Monitoring drug levels allows for a personalised approach to drug optimisation by appropriate dose escalation/de-escalation or drug switching/withdrawal.
Specimen container paediatric:
Serum (SST or plain tube)
Specimen container adult:
Serum (SST or plain tube)
Minimum volume paediatric:
1 mL
Minimum volume adult:
1 mL
Special requirements:
Ideally take sample just before drug administration (trough level)
Sample stability:
Keep in fridge until transport.If transport is going to be delayed by > 5 days, freeze at -20°C
Transport requirements:
First class post at ambient temperature
Other info:
Lithium heparin, citrate and EDTA plasma samples also acceptable