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Caffeine & Paraxanthine in Serum and Urine
We offer a service for caffeine and its main metabolite paraxanthine in
serum and urine (also saliva if required). The indications for caffeine
measurement include therapeutic drug monitoring in neonates. In other
subjects it is potentially of use in assessing caffeine intake in subjects
at risk of caffeinism. In particular this includes at risk groups whose
intake of high caffeine energy drinks is a problem.
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Test:
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Caffeine and Paraxanthine
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Laboratory
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Clinical Biochemistry |
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Specimen Type:
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Serum or plasma
or
Mid stream urine (for caffeine, creatinine ratio) |
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Storage:
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4oC prior to posting |
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Posting Details:
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Room temperature |
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Posting Address:
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Department of Clinical Biochemistry, City Hospital, Dudley
Road, Birmingham B18 7QH |
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Clinical Use:
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TDM in neonates.
Potentially of use in assessing caffeinism and excessive caffeine intake. |
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Advantages:
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Special Details:
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Serum samples need to be collected 1-2 hours post dose in neonates receiving
therapy. |
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Turnaround:
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2-3 working days and urgent service available |
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External QA Scheme:
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Yes, NEQAS |
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CPA Accredited Lab/Test:
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Yes, CPA full accreditation |
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Website:
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www.cityassays.org.uk |
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Key Contact:
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Ms Kirsty Hedges |
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Clinical Lead for this assay:
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Ms Kirsty Hedges |
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