On-site forensic analysis of colored seized materials: Detection of brown heroin and MDMA-tablets by a portable NIR spectrometer Posted on October 19, 2022 By sdargoltz Ruben F. Kranenburg, Henk-Jan Ramaker, Arian C. van Asten Drug Test Anal; 14(10); 2022 Access article Chemistry, Crime Scene Investigation and Reconstruction, DREs / Traffic Safety Resource Prosecutors, Forensic Pathology and Medicolegal Death Investigation, Seized Drugs/Controlled Substances, Sexual Assault / SANE, Toxicology