… 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-…

… Patients Nos.3, 4 and 5 showed normal values, whereas … detection was used for estromustine
and estramustine, and estradiol and estrone were detected by mass fragmentography…

… peak area with log attenuation’” or mass fragmentography.3Z The latter vitamin D levels are
… vitamin D metabolism in renal disease include serum Ca, PO,, PTH, and urea.‘-” However, …

… Renal function was normal, as judged by the blood urea … of serum and bile was confirmed
by mass fragmentography. The … acid peak on glc, making measurement impossible (Table 3). …

… Blood urea nitrogen (BUN) was used to determine INH-… and total cholesterol in serum and
liver homogenate were … on accurate mass measurements and MS/MS fragmentography. The …

… The mass fragmentography approach, which we selected, confirmed … , the determination
of GABA in CSF, here reported, may … Advances in hepatic encephalopathy and urea cycle dis…

… of the variables that determines its concentration in serum. … in its measurement may have
a profound impact on the serum … ), that measurement of creati.nine clearance is not useful in …

… The variation coefficients of a single determination were 1.5 … normal and pathological urines
by mass fragmentography … It was found that the calorimetric method gave, in normal urines, …

… Plasma urea and creatinine excretion demonstrated quadratic tendencies with the two …
determine if the dogs are losing muscle mass while on caloric restriction or if weight loss/weight …

… enzymes in the urea cycle results in impaired excretion of urea (Fig. 3). Urea cycle disorders
… Plasma ammonia levels are determined by a heparinized blood sample which should be …