A method for the measurement of uric acid in human serum by isotope dilution-mass
spectrometry is described. The analytical procedure consists of the following Steps:(1) …

A new Isotope dilution mass spectrometrlc method for uric acid Is described. A known weight
of [1, 3-1sN2] urlc acid Is added to a known weight of serum, and the mixture Is allowed to …

A method using a combination of high-performance liquid chromatography and stable-
isotope dilution-mass spectrometry is described for the specific quantitation of uric acid in …

An Isotope dilution mass spectrometrlc (ID/MS) method for serum urea Is described. The
method utilizes urea-180 as the labeled Internal standard and Involves Isolation of urea from …

A mass fragmentographic method for assay of serum uric acid was developed and used as a
reference method to evaluate the accuracy of different routine methods used in clinical …

375 A method of estimation of uric acid in urine and other body fluids Page 1 SHORT
COMMUNICATIONS 375 electrophoreiic heterogeneity of the complex or a dissociation of the …

We describe a method for determining uric acid in serum by reversed-phase liquid
chromatography with spectrophotometric detection at 280 nm. Serum, 100 ul is mixed with …

Background: A reference measurement procedure is needed to demonstrate the traceability
of results of urea measurements in human serum. We developed a measurement procedure …

The study of urea metabolism In humans necessitates sen-sitive methods, so that very low
Isotopic enrichments of plasma or urinary urea can be measured. A stable derivative of urea …

Isotopically labeled uric acid has been injected intravenously into normal subjects and
subjects with various diseases in order to determine the pool size and turnover rate of body …