… venous blood was obtained for analysis of serum levels of electrolytes, glucose, urea …
Urine was collected to determine the levels of organic acids and other abnormal metabolites…

… This, together with a normal urea concentration and normal electrolytes and normal cell …
Using a mass fragmentographic technique for determination of 4-MP (20) we have earlier …

… mass fragmentography have been proposed as reference methods. However, mass
fragmentography … with uric acid can affect the determination or the related sample preparation …

… From this analysis we found tremendous variation among … The conditions of mass
fragmentography are described in '… flow in the aorta around the caecum, resulting in a large flux of …

… key marker for the urea cycle defect argininosuccinase … analysis of very long chain fatty
acids in plasma, urine and amniotic fluid by electron capture negative ion mass fragmentography…

… Hematologic analysis showed normal values for blood and bone … been standardized against
mass fragmentographic methods (17)… This, together with normal urea concentration, normal …

… Principle: Mass fragmentography was combined with push-pull perfusion techniques for …
μM and displayed a limit of detection of 0.01 μM. Interference study with urea, citric acid, uric acid…

… Seyama and colleagues combined gas-liquid chromatography with mass-fragmentography …
, common interferents appeared in human serum such as glucose, urea, glutamate, cysteine, …

… are considered for identification purposes. Furthermore. … in 5A molecular sieves or in urea
(see the middle trace in Figure … be easily distinguished by massfragmentography and although …

… Breath samples were collected in duplicate at 15, 30, 45, and 60 min after ingestion of the
urea. The test tubes were analysed by using fragmentography. The instrument was a mass-…