Posts by John Perkins, Ph.D.

John R. Perkins, Ph.D. is the Senior Scientific Advisor with a focus on LC/MS technologies at KCAS Bio. Previously, he was at Q2 Solutions and legacy companies for over 24 years working in quantitative LC-MS/MS, principally with small molecules and small molecule biomarkers. His primary focus was on validation and sample analysis processes as well as managing customer relationships in Ithaca NY and Oss, The Netherlands.

KCAS-blog-thumb_2023-12C_CSK-Personal-Touch Blogs
Read article Clinical Sample Kitting from KCAS: Providing The Personal Touch

KCAS established our clinical sample kit (CSK) team in the early 1990s in response to shortcomings we observed in the collection techniques in trials where we were providing bioanalytical support. As the group has evolved, our aim has never been to be the biggest supplier in the industry but rather…

PATTERN_ORANGE_1320x780 Webinars
View webinar KCAS Bio Webinar “Navigating the Complex Landscape of Lipid Panels & Small Molecule Biomarkers in Drug Discovery”

Produced by AAPS Organized by Sciex Recorded on December 6, 2023 eChalkTalk available here.  Webinar Description: In this webinar, scientists from KCAS Bio, along with specialists from SCIEX Biopharma & Pharma Solutions discuss • Developing robust assays for PD biomarkers and their challenges…

PATTERN_BLUE_1320x780_2 November 15 - November 17

Along with a series of studies we plan to present related to our experiences with hybrid LC-MS/MS technology, KCAS will also be presenting on a study where we analyzed a compound that involved looking at urea in plasma and lung fluid (urea, of course, being a biomarker). Urea is endogenous…

HybridLCMS-LargeMolecules November 15 - November 17

For years, Dawn Dufield, PhD and I have been doing our best to get the word out (via as many venues as possible) about KCAS’s unique expertise with hybrid LC-MS/MS. This year’s upcoming EBF meeting in Barcelona is just such an opportunity, and one we are very much looking…

PATTERN_AMBER_1320x780 Blogs
Read article GIP & GLP-1 Analogues – More Than Just Weight Loss Drugs

The Pharm/Biotech industry’s main focus is on development of therapeutics to address unmet medical needs but sometimes, clinical trials lead to observations that lead to a change in research path for a drug. A good example is sildenafil that was originally studied for use in hypertension and angina pectoris. Observed…

PATTERN_BLUE_1320x780 Blogs
Read article Unraveling the Complexities of Oligonucleotides: Overcoming Analytical Challenges

In the world of scientific research and development, certain analytes pose unique challenges that require specialized expertise to overcome. Oligonucleotides, a class of analytes consisting of short DNA or RNA sequences, are notorious for their complexity and demanding nature. With their increasing importance in the…

KCAS-blog-thumb_2023_02-KCAS-ADCs-with-Hybrid Blogs
Read article Antibody Drug Conjugate Services from KCAS and What Hybrid Technology Contributes

Anyone who has been following KCAS for any amount of time has likely heard us discuss the advantages of Hybrid LC-MS/MS for the bioanalysis of large molecules. As pioneers in the technology for many years, KCAS has become a strong proponent of working with our customers to demonstrate the quality…

KCAS-blog-thumb_2022_CSK-World-Class-Service Blogs
Read article KCAS Provides World-Class Clinical Sample Kitting Services, with Experience in Shipping Around the Globe

KCAS established our Clinical Sample Kitting team in the early 1990s in response to shortcomings we observed in the collection techniques in trials where we were providing bioanalytical support. As the group has evolved, our aim has been to provide the flexible, custom service that…

KCAS-blog-thumb_2022_Webinar-Hybrid-Gold-Standard-1 Webinars
View webinar KCAS Webinar: “Is Hybrid LC-MS/MS becoming the new Gold Standard?”

Originally produced by Xtalks on Friday, April 22, 2022 | 12pm EDT (NA) / 5pm BST (UK) / 6pm CEST (EU-Central)  60 min Webinar Description: Due to the relative maturity of the technology, most people’s instinct when thinking about bioanalysis of large molecules is towards ligand binding assays.

KCAS-blog-thumb_2022_Hybrid-New-Gold-Standard-1 Blogs
Read article Is Hybrid LC-MS/MS becoming the new Gold Standard?

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…

KCAS-blog-thumb_2022_NonGLP-PreClinical Blogs
Read article Comprehensive Non-GLP Pre-clinical Support Services from KCAS

Although bioanalysis is KCAS’ principal area of expertise, we are always considering how we can build around those capabilities to ensure that we can provide optimal service for our clients. Our current breadth of service enables us to provide a comprehensive approach during non-GLP pre-clinical studies where it is feasible…

PATTERN_BLUE_1320x780_2 Blogs
Read article How to Avoid Getting Lines Crossed with Analysis of Lipid-substituted Peptides at KCAS

Although small molecules represent the majority of compounds in development as drug candidates, there is an increasing tendency to more complex molecular structures to address unmet molecular needs. This has been reflected in the…