Sentence examples for quantification of substances from inspiring English sources

Furthermore, in target analysis the addition of labeled authentic standards enables absolute quantification of substances in biological samples.

Exposure assessment and dose metrics have to be specifically addressed by analytical tools that enable tracing and quantification of substances at the nanoscale.

Whereas plasma levels of these cytokines were unaffected by therapy, the levels fell significantly in BMIF in patients entering remission, showing that quantification of substances in interstitial fluid may give important information on disease progression.

Such observations highlight the importance of studying signaling substances in the interstitial fluid phase of the target organ and also show the importance of quantification of substances in the microenvironment.

High-performance liquid chromatography tandem mass spectrometry (HPLC MS/MS; Qtrap 4000, Applied Biosystems, Foster City, CA, USA) or gas chromatography mass spectrometry (GC MS; Engine 5989B series II Hewlett Packard, Palo Alto, CA, USA) were used for the quantification of substances with a stable isotope dilution method [ 8].

Specifically, the use of methylation at cg05575921 for the quantification of substance use is covered by U.S. Patent 8,637,652 while the use of other loci is patent pending.

A working group from CEN TC 351 (WG 5) is currently harmonizing analytic methods for the quantification of these substances in eluates.

Due to the difficulties and expenses to prepare all the related reference standards, the application of the external standard method was limited, so correction factor was used in the quantification of related substances.

The device was tested with real water samples containing large amount of environmental particles, without showing clogging of the membrane, and enabling nonspecific quantification of adsorbing substances in a few minutes.

In this work a protocol to validate analytical procedures for the quantification of drug substances formulated in polymeric systems that comprise both drug entrapped into the polymeric matrix (assay:content test) and drug released from the systems (assay:dissolution test) is developed.

Simultaneous quantification of several substances in a sample makes it possible to calculate the cytokine ratio.