The fact that isotonitazene concentrations in biological samples are often reduced to sub-nanogram per milliliter is an additional issue, and it emphasizes the requirement for enhanced analytical sensitivity when tests for that material. Protonitazene is a different artificial opioid, mysterious right before showing up in a report in May 2021 https://andycmtye.gynoblog.com/22140264/the-2-minute-rule-for-protonitazene-powder-for-sale