UNSPSC 41141826: Porphobilinogen

In this classification, this entry connotes a substrate made of Porphobilinogen that is used in clinical chemistry testing.

UNSPSC 41141826 Porphobilinogen (Commodity) does not map to recent state and local procurement activity. The code nominally describes a specific biochemical compound used in diagnostic testing, but the thirteen recent opportunities posted under this code involve laboratory consumables, reagents, and diagnostic equipment spanning respiratory pathogen detection, wastewater surveillance, food and water safety testing, whole genome sequencing, and clinical diagnostics—none of which are porphobilinogen procurement. The mismatch between the code's narrow chemical focus and the breadth of diagnostic and public health testing being solicited suggests either systematic miscoding by issuing bodies or a taxonomy drift where the code has been repurposed to capture laboratory reagents and consumables more broadly than its official name reflects.

Recent activity clusters heavily in Texas, where the Texas Health and Human Services Commission and Department of State Health Services have issued at least six competitive IFBs since February 2026 for respiratory panel kits, culture media, extraction disks, chemical standards, and sequencing consumables supporting wastewater surveillance and drinking water testing programs. The University of Texas Health Science Center at San Antonio posted an RFP for a comprehensive biotech research and clinical diagnostics catalog with punchout e-procurement integration. Mississippi State Department of Health issued two sole-source procurements (one for Clear Labs WGS reagents, one for Illumina sequencing kits) totaling approximately $620,000 combined. California issued brand-restricted RFBs for MyCodeDR reagents and Cerilliant spiking solutions. The City of Philadelphia issued a micro purchase for extraction columns. Issuing bodies are dominated by state health departments and public health laboratories; one university health science center; one municipal procurement office. Most Texas procurements fall in the $25,000–$90,000 range per historical guidance, though Mississippi's Illumina sole source reached $393,667.98. The code sees no meaningful activity outside Texas, Mississippi, California, and Philadelphia, and no set-asides or disadvantaged-enterprise restrictions appear in the available summaries, though Texas solicitations impose extensive state-specific certifications including E-Verify, human trafficking prohibitions, and Texas-specific boycott and discrimination provisions.