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Penicillamine challenge in Wilson's disease
Tim,
 
See Julian Barth's book - Biochemical Investigations in Laboratory Medicine (ACB Venture Publications). States: 09.00: Start 24 hr urine, administer 500 mg d-penicillamine; 21.00 administer second 500 mg dose; 09.00 complete 24 hr collection. Also states a combination of abnormal results is probably necessary for diagnosis - thresholds: Caeruloplasmin < 0.2 g/L; Se Copper <12 umol/L; Urine Copper > 4umol/24 hr; Ur copoer post penicillamine >25 umol/24hr."
 
Joe 
 
 
Dr JP Begley,
Clinical Biochemistry Department,
Poole & Royal Bournemouth Hospitals,
Dorset


From: Clinical biochemistry discussion list on behalf of Reynolds Tim
Sent: Thu 18/10/2007 09:59
To: [log in to unmask]
Subject: Penicillamine challenge in Wilson's disease

I need to organise a penicillamine challenge test for a patient with
probable Wilson's disease there are lots of references to this test on
the net but they all give instructions like this:

Following penicillamine 0.5 g 12 hourly x 2, urine copper exceeds 25
micromol/24 hour in 88% patients with WD and 2% with other liver
disorders.

Does anyone know the precise time schedule relating the penicillamine
should be taken and the time the urine collection starts?

i.e. is it start both penicillamine and collection at the same time, or
is there a lag between taking the drug and starting th eurine
collection?

TIM

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Prof. Tim Reynolds,
Queen's Hospital,
Belvedere Rd,
Burton-on-Trent,
Staffordshire,
DE13 0RB

work tel: 01283 511511 ext. 4035
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------ACB discussion List Information-------- This is an open discussion list for the academic and clinical community working in clinical biochemistry. Please note, archived messages are public and can be viewed via the internet. Views expressed are those of the individual and they are responsible for all message content. ACB Web Site http://www.acb.org.uk List Archives http://www.jiscmail.ac.uk/lists/ACB-CLIN-CHEM-GEN.html List Instructions (How to leave etc.) http://www.jiscmail.ac.uk/