Simultaneous determination of guanidinoacetate, creatine and creatinine in urine and plasma by un-derivatized liquid chromatography-tandem mass spectrometry
Author(s) -
Rachel S Carling,
Sarah Hogg,
Timothy C. Wood,
J Calvin
Publication year - 2008
Publication title -
annals of clinical biochemistry
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.6
H-Index - 80
eISSN - 1758-1001
pISSN - 0004-5632
DOI - 10.1258/acb.2008.008029
Subject(s) - creatine , creatinine , chemistry , chromatography , urine , analyte , tandem mass spectrometry , mass spectrometry , liquid chromatography–mass spectrometry , detection limit , biochemistry
Creatine plays an important role in the storage and transmission of phosphate-bound energy. The cerebral creatine deficiency syndromes (CCDS) comprise three inherited defects in creatine biosynthesis and transport. They are characterized by mental retardation, speech and language delay and epilepsy. All three disorders cause low-creatine signal on brain magnetic resonance spectroscopy (MRS); however, MRS may not be readily available and even when it is, biochemical tests are required to determine the underlying disorder.
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