Los Angeles United States

Choi, Yun-Jung

Los Angeles, CA (United States)

E-mail: **********@*****.***

Experience

Criminalist (06/2023 –present)

Los Angeles County Department of Medical Examiner (Los Angeles, CA)

● Post-mortem blood sampling

● Perform Solid Phase Extraction

● ELISA analysis for presumptive testing

● GC/MS data analysis of methamphetamines and similar structured drugs

● Homogenization of human specimens

Solution Chemist (08/2017 –05/2023)

UCLA Olympic Analytical Laboratory (Los Angeles, CA)

● Prepares controls and calibrators for routine analytical service, proficiency testing, and research use

● Maintain laboratory inventory of reference standards and controlled substances

● Provide SOP review and revision

● Perform an Internal audit in compliance with A2LA and ISO17025

● Assist the scientific director and senior scientists in special projects/research

● Receiving, accessioning, and processing of human specimens

● Analysis of insulin growth hormone (IGF-1) biomarker testing via LC/MS/MS

● Perform an immunoassay analysis on human growth hormone quantification

● Pipette and balance calibration

● Perform LC/MS/MS method validation

Laboratory Technician (01/2021 –02/2022)

Promis Diagnostics (Pasadena, CA)

● Colorectal cancer sample receiving and accessioning

● DNA extraction from stool samples

● COVID-19 RNA extraction from buccal swabs

Analytical Chemist (05/2016 – 08/2017)

Westwood Laboratory (Azusa, CA)

● Develop an HPLC Method for drugs in cosmetic products such as Lidocaine HCl, Hydrocortisone Acetate, Capsaicin, Methyl Salicylate, Benzocaine, and Tolnaftate.

● Perform routine analysis of raw materials, in-process samples, and finished products.

● Maintain documents and generate reports according to the laboratory SOP Quality Chemist (06/2015 – 05/2016)

Paragon Laboratories (Torrance, CA)

● Perform HPLC analysis of water-soluble vitamins, melatonin, caffeine, calcium panthothenate, B-12, raspberry ketone, resveratrol, and quercetin

● Analyze minerals and heavy metals via Atomic Absorption Spectrometer

● Analyze lipoic acid, polyphenol, and cyanocobalamin via UV-Vis Spectrometer

● Identify all raw materials through FTIR

● Performed acid-base titration to analyze amino acids

● Mercury analysis through a direct mercury analyzer Skills

● Good record-keeping and documentation skills

● Detail-oriented

● Ability to quickly produce accurate results and reports

● Proficient with MS Office, ChemStation, and/or Labware (or a comparable LIMS system)

● Demonstrable wet chemistry techniques such as liquid-liquid extraction, solid-phase extraction

● Demonstrated ability to run high-throughput analytical workflows requiring fast sample turnaround and consistent data quality

● Able to work effectively independently and on cross-functional teams and projects

● Ability to learn and work professionally with respect

● Well organized and able to work well with others at all levels in the organization

● Ability to learn and work with various instruments and analysis software Education

M.S. Criminalistics

California State University, Los Angeles

B.S. Chemistry

California State University, Los Angeles

A.A. Natural Sciences

Pasadena City College

Certification

CDPH Certified Phlebotomy Technician I (10/07/2024-10/06/2026) Certification# CPT-02287489

Professional Membership

● Associate member of the California Association of Toxicologists (12/2023 – present)

● Associate member of the California Association of Criminalists (02/2022 – present) References

● Available upon request

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