Allis Chien, PhD, SUMS Director 

Allis Chien, Ph.D., graduated from the University of San Francisco with a B.S. in Chemistry with an emphasis in Biochemistry.  She earned her Ph.D. in Chemistry from Stanford University in 2000, then stayed on to establish and grow the mass spectrometry core.  Along with the professional mass spectrometrists who staff the laboratory, Dr. Chien is knowledgeable, skilled, and experienced in the practice and application of modern mass spectrometric techniques to answering key research questions.  This expertise is instrumental in harnessing the power of mass spectrometry to make significant contributions to the cutting edge research progress of Stanford investigators.  Dr. Chien is a member of ASMS and ACS, and an active volunteer for the ABRF (Association of Biomolecular Resource Facilities).  Outside work, she has fond memories of reading, knitting, playing several instruments, and singing, before her son was born …and is gradually returning to these interests as he grows up.

Email: allis@stanford.edu     Phone: 650-723-0710     Fax: 650.725.0259

Chris Adams, PhD, Director of Proteomics 

Chris Adams is the Director of proteomics at the Stanford University Mass Spectrometry (SUMS) Laboratory. SUMS supports both Stanford researchers as well as other academic and industrial research. Chris is responsible for oversight of the proteomic laboratory including instrumentation, sample preparation and data analysis. Chris received his PhD from Uppsala University, Sweden within the department of biological and medical mass spectrometry under the guidance of Professor Roman Zubarev. Prior to graduate school Chris worked at various research positions with Amgen and Baxter Biosciences. His undergraduate work was done in biochemistry at California Polytechnic State University, San Luis Obispo. He is a Southern California native and in his free time enjoys outdoor activities with his wife, daughter and dog that include boating and snow skiing.

Email: adamscm@stanford.edu     Phone: 650.725.9769     Fax: 650.725.0259

Ludmila Alexandrova, PhD, Qualitative & Quantitative MS, PK, Metabolite ID, Metabolomics

Ludmila Alexandrova started her scientific career in the United States with Syntex which later became Roche. During her career with Roche, Ludmila became proficient in bioanalysis, metabolism and pharmacokinetics (PK) of small molecules. She developed and validated numerous LC/MS methods for quantification of small molecules as well as metabolites to support PK, toxicology and clinical studies. She became proficient in metabolite identification (ID). In addition, Ludmila became a core member of several inter-disciplinary project teams leading product development. In recent years at Stanford, Ludmila focus has been on providing expertise and top-quality mass spectrometry support for scientific research by educating and collaborating with researchers, carrying out data analysis, and developing new mass spectrometry based analytical methodology. 

Email: ludmilaa@stanford.edu     Phone: 650.725.9769     Fax: 650.725.0259

Karolina Krasinska, MS, Quantitative MS 

Karolina Krasinska has been a Staff Scientist at SUMS since 2004. She is responsible for custom projects related to quantitative analysis of small molecules and peptides in various biological matrixes. She received her Master of Science degree in analytical and inorganic chemistry from Warsaw University, Poland. After graduating she worked at Mass Spectrometry Lab at the Institute of Organic Chemistry, Polish Academy of Sciences in Warsaw, Poland where her work focused on mass spectrometric analysis of small molecules. After moving to US in 2002 she joined Sidney Kimmel Cancer Center and was responsible for isolation, purification and analysis of vascular endothelial membrane proteins from rat tissues as well as 1D gel and HPLC‑tandem mass spectrometry analysis. In her time away from the lab she is a busy mom of two boys and shares her passion for cooking with her husband, Antoni.

Email: krasin@stanford.edu     Phone: 650.725.9769     Fax: 650.725.0259

Ryan Leib, PhD, Proteomic Bioinformatics

Ryan Leib is a Staff Scientist, overseeing protein bioinformatics capabilities for the Stanford University Mass Spectrometry Laboratory. Ryan received his B.S. in Biochemistry from the University of Tulsa (Tulsa, OK), with a focus on LC/MS methods development for natural products discovery. In 2010, he received his Ph.D. in Chemistry from the University of California at Berkeley investigating ionic cluster formation and energetics in Professor Evan Williams’ mass spectrometry laboratory. Prior to joining SUMS, Ryan developed mass spectrometric analyses for complex mixtures as a Project Leader at SRI International, a non-profit contract R&D firm based in Silicon Valley. Ryan and his wife reside in Berkeley, CA, where they enjoy eclectic activities like glass blowing, hosting weekly boardgame gatherings, and making prize-winning chilis.

Email: rdleib@stanford.edu     Phone: 650.725.9769     Fax: 650.725.0259

Theresa McLaughlin, MS, Lab Manager, HRMS, Custom Projects, Open Access Lab 

Theresa McLaughlin is Lab Manager at SUMS. She is responsible for open access LC-MS analysis (equipment maintenance and troubleshooting), HRAM analysis, and custom projects. Theresa received her MS in Chemistry from Seton Hall University in East Orange, NJ.  She has worked at FMC Corporation, Thermo Fisher Scientific, and Merck & Co. Inc.  Her experience includes metabolite identification using LC/MS and GC/MS, process impurity characterization, quantitative analysis of peptides and small molecules, and software validation for data analysis.  Theresa has lived most of her life in New Jersey, and believes the most true to life of all the New Jersey based reality television shows is “Kitchen Cousins” on HGTV.

Email: tmcl@stanford.edu     Phone: 650.725.9769     Fax: 650.725.0259

Anna Okumu, BS, Proteomics

Anna Okumu is the research associate in the proteomics section at the Stanford University Mass Spectrometry (SUMS) Laboratory. She is responsible for sample preparation as well as implementing and streamlining new techniques that are beneficial to clients. Anna earned her bachelors of science in Chemistry with an emphasis in Biochemistry, from Pacific Union College in Angwin, CA.  Prior to joining the lab, Anna spent several years working in the organ and tissue donation field and pathology. When Anna is not at work, she enjoys hiking with her dogs, traveling and photography. 

Email: aokumu@stanford.edu     Phone: 650.725.9769     Fax: 650.725.0259

Yuxi (Rachel) Wu, BA, Finance

Yuxi (Rachel) Wu is the accounting associate at Stanford University Mass Spectrometry (SUMS). She handles all finance and billing, and provides general support. Rachel received her Bachelor’s degree of Economics in Finance from Jimei University, China. She worked for an international trading company as an intern bookkeeper before she moved to US in 2011. It was also when she decided to take a little detour and exploration on her career path. Her experience includes handling accounts payable, reconciling bank deposits and accounts, generating monthly and yearly financial reports and processing import and export transactions. She is a happy person who enjoys horse riding, Chinese dancing, traveling and photography in her free time.

Email: yuxiwu@stanford.edu  Phone: 650.725.9769  Fax: 650.725.0259