Experts from Quest Diagnostics will highlight data from 13 studies on a range of laboratory topics at the 2026 Association for Diagnostics & Laboratory Medicine’s (ADLM) Annual Meeting, July 26-30, 2026 in Anaheim, California.

The studies cover a range of the company’s clinical focus areas, including cardiometabolic and endocrinology, infectious disease and immunology, neurology, prescription drug monitoring and toxicology, and oncology. 

Posters being presented by Quest researchers:  

• Comparison of the 2021 CKD EPI Creatinine-Cystatin C eGFR Refit to the 2012 CKD-EPI Cystatin C and the 2021 2012 CKD-EPI Creatinine eGFR Refit for Assessment of Kidney Disease; Kristin Mullins (Poster B-288, July 29, 1:30pm-2:30pm PT) 

• Comparison of BioFire and Verigene Blood Culture Tests for Identification of Polymicrobial Gram-Positive/Gram-Negative Cultures; George Pratt (Poster A-101, July 28, 1:30pm-2:30pm PT) 

• High-Throughput LC-MS/MS Assay for Quantitation of Glial Fibrillary Acidic Protein (GFAP) in Plasma; Shelby Jiyeon Ahn (Poster: B-329, July 29, 1:30pm-2:30pm PT) 
• IGF-2/IGF-1 Ratio is Associated with Plasma Amyloid Biomarkers in Alzheimer’s Disease: Possible Evidence of Modulation of Amyloid Biology; Nima Hosseini Jazani (Poster B-332, July 29, 1:30pm-2:30pm PT) 

• Establishing Measurement Uncertainty for Tumor Markers: Impact of Analytical Variation in Quality control Material vs. Patient Serum Matrix; Vivek Kumar (Poster: B-093, July 29, 1:30pm-2:30pm PT) 

• Associations of Serum Per- an Polyfluoroalkyl Substances (PFAS) Levels with Clinical Indicators in a Clinical Patient Cohort; Wen Dui (Poster: B-382, July 29, 1:30pm-2:30pm PT) 
• Winner of Best Abstracts Submitted in TDMTOX Division (1 of 5) 
• Comparative Evaluation of Benzodiazepines Positivity Rates in Serum and Urine by LC-MS/MS; Victoria Zhe Cheng (Poster: B-381, July 29, 1:30pm-2:30pm PT) 
• Development and Validation of a High-throughput LC-MS/MS Method for Routine Monitoring of Benzodiazepines in Serum; Thomas W. Gorewich (Poster: B-383, July 29, 1:30pm-2:30pm PT) 
• The Determination of Mitragynine in Human Urine by Liquid Chromatography Tandem Mass Spectrometry; Bing Pang (Poster: B-331, July 29, 1:30pm-2:30pm PT) 
• Cross-reactivity of Designer Benzodiazepines in point-care Urine Drug Screening Cups; Jilian Neifeld (Poster: B-385, July 29, 1:30pm-2:30pm PT)  
• Gabapentin Positive Urine Specimens and Detection of Opioids; Lixia Chen (Poster B-380, July 29, 1:30pm-2:30pm PT) 
• Hydrolysis of Clinical Urine Specimens for Monitoring Nicotine Use; Taylor Hunt (Poster B-384, July 29, 1:30pm-2:30pm PT) 
• A Definitive High-Throughput Assay for Cyclobenzaprine, Norcyclobenzaprine, Dextromethorphan, and Dextrorphan in Urine; Anita Dermartirosian (Poster B-330, July 29, 1:30pm-2:30pm PT) 

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