Receipt and chain of custody
Packages are opened in a designated receipt area. Container integrity, label match, and temperature condition are recorded. The received date shown in the member portal is the laboratory receipt date, not the carrier delivery scan.
Aseptic handling for microbiology
Endotoxin and microbial work is segregated from routine chemistry weigh-out. Operators use gloves, designated consumables, and a cleaned work surface. Sample aliquots for LAL and plate counts are taken before chemistry dilution whenever mass allows.
Chemistry contamination control
UHPLC work uses dedicated glassware or single-use vials, filtered solvents, and blank injections in the sequence. Carryover checks are included when a high-level sample precedes a trace-level request.
Environmental controls
The microbiology bench is cleaned on a defined schedule. Growth-media lots are checked. Out-of-limit environmental observations are documented and can delay a microbial report.
Personnel practice
Staff follow written gowning and hygiene rules for microbial and endotoxin benches. Jewelry, food, and non-laboratory containers stay out of controlled work areas.
What we will not claim
We will not mark a COA “sterile” based on visual inspection, client statement, or endotoxin alone. Endotoxin, TAMC/TYMC, and sterility answer different questions and are reported separately.