Due to the relative maturity of the technology, most people’s instinct when thinking about bioanalysis of large molecules is towards ligand binding assays. However, we urge people to be open to a more flexible approach. Using hybrid LC-MS/MS can be an equally useful tool for quantitation of biological therapeutics and…

There has been an increasing focus on large molecule therapeutics and pharmaceutical companies have increasingly aligned their development pipelines in that direction. This has resulted in more biological therapeutics coming to market.  Last year,…

Pharmacodynamics (PD) is defined as the study of the biochemical and physiological effects of drugs and the mechanisms of their actions. Where pharmacokinetics looks at how the organism processes the drug, pharmacodynamics studies how…

Biomarkers are key drivers in the drug development process.  Frequently, developing a panel of biomarkers to test a particular mechanism or hypothesis is critical to the success of a drug.  At KCAS, we develop assays for custom panels or individual biomarkers based on client needs and can also assist with…

Biomarker is a broad term and can mean so many different things depending upon the scientific discipline. For Bioanalytical biomarker analysis – and specifically for CROs equipped with 9 different platforms to measure biomarkers and a cell culture suite with up to 19 color flow cytometry all under one roof…

Biomarker are key drivers in the drug development process.  Frequently, developing a panel of biomarkers to test a particular mechanism or hypothesis is critical to the success of a drug.  At KCAS, we develop assays for custom panels or individual biomarkers based on client needs and can also assist with…

Several important classes of drugs are inherently unstable in biological fluids. Examples include alkylating agents, cytostatic nucleosides, drugs with ester, aldehyde, thiol, nitroxyl or lactone functional groups, and small molecule compounds with unstable metabolites, such as acylglucuronides. The rate at which an analyte degrades in blood, other biological fluids, or…

The 505(b)(2) drug development path, in contrast to traditional development of a new, never been approved drug (described under 505(b)(1) of the Federal Food, Drug, and Cosmetic Act) or ANDA (described under Section 505(j) of the Act) for a generic drug that is no longer under patent…

Surprisingly, there are a number of drug development companies that do not obtain stable isotope-labeled internal standards (SIL-IS) for their bioanalytical methods. Instead they settle for using a surrogate internal standard (a compound that closely resembles the measured analyte) which can lead to unreliable data and be detrimental to a…