Abstract
Objectives: Does abnormal betaine excretion persist? Design and methods: Patients (10) with abnormal excretion in 1998 were recalled in 2005. Subsequent urine samples were collected on 4 days from persistently abnormal subjects. Results: Half the 1998 abnormal patients were abnormal in 2005. Only 1/20 controls was abnormal ( p = 0.015). All patients with abnormal excretion in 1998 and 2005 had abnormal excretion on successive days while no controls did. Conclusions: High betaine excretion may be chronic and a health risk.
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