Read the recorded value in context
A fentanyl cutoff belongs to an identified product configuration. The same-looking number can be incomplete without a stated unit, specimen, test method, and associated instructions. Product listings may retain source text as entered; that text should not be silently converted or treated as a full technical specification.
A cutoff also does not give a universal time since exposure or a complete conclusion about a specimen. Follow the documentation supplied for that exact device.
Compare exact SKUs
When evaluating strips, dip cards, and combined panels, compare each item’s analyte list and configuration separately. Check the package insert for the defined unit, read steps, and any limitations. Keep the original wording available during supplier review.
If the catalog record lacks a unit or seems to conflict with the printed label, do not assume either source is correct; ask for confirmation and document what was verified before purchasing.
Use a compliant program procedure
The organization’s procedures should describe the source of its product specifications and how staff access the instructions. For federally regulated workplace programs, consult the current program guidance. For other settings, obtain the professional and regulatory review applicable to that organization.
The catalog is for supply comparison. It does not establish a clinical interpretation or replace manufacturer documentation.