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Contact our Therapeutic Drug Monitoring Unit

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Contact our Therapeutic Drug Monitoring Unit

Chalfont Centre switchboard number 01494 601 300


Main Laboratory 01494 601 424

Patient results and enquiries 01494 601 423

Consultant Clinical Scientist/Head of Unit Dr K Kipper 01494 601 423

Transformation Advisor Mr F McQueen 01494 601 355

Consultant Clinical Scientist (part-time)  Dr E. P. Spencer 01494 601 424

Clinical Scientist Mr A. W. James 01494 601 424

Clinical Scientist Mr F. P. Quinlivan 01494 601 424

Quality & Administration Manager Mrs Kate Choinkowska 01494 601 490

Phlebotomy Services Mrs Julie Dick 01494 601 345

Phlebotomy Services Jolanta Krysa 01494 601 345

Medical Director Professor J. W. Sander 01494 601 343

Using the TDM service

The assay service is routinely available Monday to Friday, 9am-5pm. For urgent assay requests, please contact the unit in advance. The unit will report on non urgent assay requests within 3 working days of receiving the sample in the laboratory, excluding weekends or bank holidays.

Sample type

The matrix of choice is serum or plasma, and although they can be used inter-changeably it is preferable to use one or the other. In most clinical settings the measurement of total serum concentrations will suffice and indeed most routine methods for measuring AEDs in sera do not discriminate between the component of drug that is free (unbound) and that that is bound to serum proteins.