The Importance of Accurate Cystine Level Testing

Dr Neil Dalton of The Evelina Childrens Hospital, London.

“The importance of white cell cystine measurements in the diagnosis and clinical management of patients with cystinosis cannot be over emphasised. The measurement is particularly valuable in determining how well Cystagon treatment is working, but there are problems, specifically in relation to the time of blood sampling time, that can lead to misleading results. The purpose of this essay is to discuss some critical points that, hopefully, will lead to be a better understanding of the white cell cystine test.”

We are grateful to Dr Neil Dalton for writing this important article on The Importance of Accurate Cystine Level Testing.