[Skip to content]

Print this page
.

Test and sample information

This is a searchable database of information about tests offered by Pathology at the Royal Derby Hospital. 

If there are any comments on specific test content please contact john.monaghan@nhs.net .

For further patient information on pathology tests please visit: www.labtestsonline.org.uk

Test
Caffeine
Sample
Blood
Sample container
Vacutainer / Red / Serum
Volume required
5ml
Special requirements for specimen collection
Do not use SST tube.  Lithium Heparin samples are also suitable.
Reference Ranges
Therapeutic Range 25-40 mg/L. Toxicity generally does not occur until level exceeds 80mg/L.
Storage
Fridge
Discipline
Biochemistry
Turn around time
10 working days
Last modified: 02/08/2017