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ID:47 Caffeine
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DescriptionAssay not routinely available. In the event of suspected caffeine toxicity the request must be discussed and arranged with the biochemistry duty officer, LGI 23285, SJUH 64293.
IndicationTherapeutic Drug Monitoring - used in babes to stimulate respiration
Additional InfoAssay measures total caffeine - protein bound and unbound.
Concurrent Testsna
Dietary Requirementsna
InterpretationNOTE: units changed from mmol/L to mg/L May 1 2007

DepartmentBiochemistry
SampleBlood
TubeSerum or Heparin
Tube Picture
Collection ConditionsNo restrictions
Min. Vol0.6 mL
Freq.Referred to external laboratory

Ref. Range (Male)
Ref. Range (Female)
Ref. Range (Paed) 27 - 41 mg/L (Note Units)
Ref. Range NotesReference range only applicable for high dose caffeine therapy. NOTE: Reporting units changed from mmol/L to mg/L May 1, 2007
Unitsmg/L
IP Acute TATRefer to Website
IP Routine TAT2 weeks
GP Acute TATRefer to Website
GP Routine TATRefer to Website
Turnround CommentSharon Collyer:camilla.scott@sch.nhs.uk

Originally edited by : JHB. Review due on 22/11/2018 08:59:57. Published By on 22/11/2017 08:59:57.