UNSPSC 41181907: Cancer antigen 15-3 tests

In this classification, a Cancer antigen 15-3 tumor associated antigen immunological test system that consists of the reagents used to identify by immunochemical techniques Cancer antigen 15-3 based tumors.

UNSPSC 41181907 Cancer antigen 15-3 tests is a Commodity code, but the recent state and local procurement activity tagged under it shows minimal relevance to laboratory diagnostic testing for cancer biomarkers. Of the fourteen opportunities in the dataset, only two—Marion County, Oregon's laboratory testing services for adults in custody and the County of Santa Clara's public health lab information management system replacement—connect directly to clinical laboratory operations; the remainder involve equipment repair, material testing, water infrastructure, electrical systems, and scientific instrumentation unrelated to CA 15-3 assays or oncology diagnostics. The Marion County solicitation (ITB SO1814-26, due July 24, 2026) encompasses general laboratory testing, specimen collection, phlebotomy, and courier services for custody populations, with no specific mention of tumor marker panels or cancer antigen testing. The Santa Clara County RFI (due April 22, 2026) addresses lab information management system selection but does not detail the assay portfolios the replacement LIMS will support.

Recent activity under this code is sparse and geographically scattered, with Oregon and California representing the only jurisdictions showing procurement approaches to laboratory services. No state or local purchasing office has posted a dedicated solicitation for cancer antigen 15-3 testing services, reference laboratory capabilities, or biomarker testing contracts. The broader pattern suggests that state and local governments either procure such tests reactively through standing clinical laboratory agreements, bundle them within larger diagnostic service contracts that are coded to broader UNSPSC families, or source them through GPOs and cooperative purchasing vehicles not reflected in individual RFP activity. Vendors pursuing this code should expect limited discrete opportunities and should consider whether their competitive position is stronger in the broader laboratory-services family (UNSPSC 411800) or through established relationships with regional public health and county health department procurement offices.