UNSPSC 41131716: Carboxyhemoglobin assay

In this classification a carboxyhemoglobin assay is a device used to determine the carboxyhemoglobin (the compound formed when hemoglobin is exposed to carbon monoxide) content of human blood as an aid in the diagnosis of carbon monoxide poisoning. This measurement may be made using methods such as spectroscopy, colorimetry, spectrophotometry, and gasometry US FDA regulates Carboxyhemoglobin assay under 21 CFR 864.7425 and under FDA product code LGL.

UNSPSC 41131716 Carboxyhemoglobin assay is a Commodity code that covers laboratory drug and alcohol testing services and related analytical equipment purchased by state and local health, correctional, and public safety agencies. The code's recent activity reflects a much broader scope than its nominal name suggests: state and local buyers are soliciting urinalysis screening and confirmation testing, breath alcohol analysis equipment, pre-employment and fitness-for-duty drug testing, offender specimen collection and testing operations, forensic reference materials for toxicology work, and employment screening services bundled with drug testing, background checks, and criminal record searches. Issuing bodies include county corrections and supervision departments, county public health divisions, county human resources offices, state public safety agencies, city colleges, and county/municipal law enforcement and forensic operations. Collin County Community Supervision and Corrections Department in Texas, Benton County in Oregon, Pinellas County in Florida, Clay County in Florida, Collier County in Florida, Seminole County in Florida, Nevada Department of Public Safety, and City Colleges of Chicago all posted opportunities under or closely related to this code within the past four months.

Activity is concentrated in Florida and Texas, with secondary postings from Oregon, Nevada, and Illinois. Representative recent opportunities include Collin County's RFP for offender specimen collection and drug testing services (due July 23, 2026, with an estimated contract value of $600,000 covering approximately 25,031 annual tests across five-panel and six-panel immunoassay screening with LC/MS/MS or GC/MS confirmation), Benton County's RFP for urinalysis testing supporting a family treatment court program (due July 7, 2026, requiring CLIA certification and results within 48 to 72 hours), Clay County's IFB for physicals and drug testing for county and public safety personnel (due February 26, 2026, with local preference available), and City Colleges of Chicago's RFP for employment screening services bundling drug testing, background investigations, and Medical Review Officer services for a seven-college system (proposals due March 30, 2026, with MBE goals at 25% and WBE goals at 7%). Nevada's Department of Public Safety posted two separate bids for Intoxilyzer 9000 breath alcohol testing equipment and printers in January–February 2026. The code also captures forensic and clinical assay materials: Pinellas County's ITQ for certified drug reference standards for forensic laboratory validation (due April 23, 2026, funded through the Paul Coverdell Forensic Sciences Improvement Act with SBE preference), and the State of Oregon's sole-source notification for MyCare Psychiatry Clozapine Assay Kits from Saladax Biomedical (posted May 4, 2026).