ISO/IEC 17025:2017 calibration + biological testing · Valid through 2027
The November 2023 USP <797> revision raised the bar across the entire compliance stack
The revised USP General Chapter <797>, effective November 1, 2023, applies to every hospital pharmacy and compounding facility that prepares Category 1, Category 2, or Category 3 sterile preparations. It tightened sampling frequency, added genus-level identification requirements for action-level excursions, and shifted the inspection standard from did sampling happen to is the data defensible.
Defensibility is not a single service. It is the combined output of how the cleanroom was commissioned, how it is recertified, how the primary engineering controls are tested, how viable samples are collected and incubated, and how every instrument in the chain is calibrated. A gap anywhere in that stack is a gap an inspector can find.
This Hub introduces every service that protects audit-defensibility under USP <797> / <800> / <825>, and links to the dedicated page for each.
The compliance services map
Every service Allometrics and the Allometrics Group deliver under USP <797>, <800>, and <825>:
| Service | What it covers | Spoke page |
|---|---|---|
| Cleanroom commissioning | Initial qualification of new or renovated cleanrooms — HVAC startup, air balance to design specs, pressure mapping, HEPA integrity, ISO 14644 classification verification, IQ/OQ/PQ documentation. Delivered by Precision Biotech Solutions. | Cleanroom commissioning → |
| Cleanroom certification | Periodic recertification (annual or semi-annual, by Category) — particle counts, air change rates, pressure differentials, recovery testing, T/RH validation, dynamic smoke studies, HEPA integrity. CETA RCCP + NSF Accredited Technicians. | Cleanroom certification → |
| Biosafety cabinet certification | NSF/ANSI 49 testing of BSCs, LAFWs, CAIs, and CACIs. NSF/ANSI 49 Field Certifier credentialed technicians under A2LA ISO/IEC 17025. | BSC certification → |
| LAFW / CAI / CACI | Primary engineering controls for sterile compounding under USP <800>. | LAFW · CAI · CACI |
| Fume hood certification | ANSI/ASSP Z9.5 certification of laboratory chemical fume hoods. Required for any pharmacy compounding hazardous drugs under USP <800>. | Fume hood certification → |
| Microbial testing services | Viable air, surface, gloved fingertip, media fill testing under USP <797>. Collection by Allometrics; A2LA-accredited incubation and microbial ID by Taylor Lake Laboratories under Cert 7533.01 — one of the few labs in the nation with A2LA accreditation specifically for environmental monitoring. | Microbial testing → |
| Air balancing (TAB) | NEBB-credentialed testing, adjusting, and balancing of cleanroom HVAC systems. Includes Joint Commission TAB support for hospital systems preparing for Environment of Care surveys. Delivered by Precision Biotech Solutions. | Air balancing / TAB → |
| Equipment calibration (cGMP) | A2LA Cert 2039.01 ISO/IEC 17025 calibration that directly satisfies FDA 21 CFR 211.68 — the core regulatory requirement for cGMP equipment calibration. NIST-traceable, audit-ready, with onsite and pickup-and-drop-off service modes. | Calibration (cGMP / pharma) → |
| Temperature & humidity mapping | Pharmacy storage rooms, vaccine cold storage, refrigerator and freezer mapping. IQ/OQ/PQ qualification reports formatted for USP <1079> and <797> ambient requirements. | Mapping → |
| Personnel competency | Annual gowning, hand hygiene, gloved fingertip, and aseptic technique verification per USP <797>. | → section of Microbial testing |
USP <797> environmental monitoring frequency at a glance
| Compounding category | Viable air sampling | Surface sampling | Personnel competency |
|---|---|---|---|
| Category 1 | At least every 6 months | Monthly | Annual recertification minimum |
| Category 2 | At least every 6 months | Monthly | Annual recertification minimum |
| Category 3 | Monthly | Weekly | Every six months minimum |
Category 3 is the most demanding and covers the highest-risk preparations. The frequency table above is the floor — your facility's quality manual or accreditation body may require more.
What inspectors actually ask
A surveyor or FDA investigator does not ask whether sampling happened. They ask whether the data is defensible:
"Where was this sample incubated, and is that lab accredited under ISO/IEC 17025?"
"Can you show me the chain of custody from sample collection to result?"
"What method was used for genus-level identification, and is it within scope of accreditation?"
These are questions ISO/IEC 17025 is explicitly designed to make answerable in writing. They are also questions a vendor without ISO/IEC 17025 scope cannot answer in writing.
The two patterns that produce documentation gaps:
Unaccredited in-house incubation — collection, incubation, and reporting all done by one vendor, but the vendor is not A2LA-accredited under ISO/IEC 17025.
Fragmented chain of custody — collection and decontamination by one vendor, samples shipped to an unnamed external lab, results returned through a multi-step handoff. Even when the external lab is accredited, the chain of custody spans organizations and the documentation must reconcile across both.
Either pattern is recoverable on inspection day if the documentation is complete. Neither is defensible if it is not.
ISO/IEC 17025 mapped to USP <797>, <800>, and <825>
| Inspector question | USP / FDA / JC reference | ISO/IEC 17025 clause |
|---|---|---|
| Are personnel competent? | USP <797> personnel; FDA cGMP 21 CFR 211.68 | Clause 6.2 |
| Are methods validated? | USP <797> microbial ID requirements | Clause 7.2 |
| Is equipment calibrated and traceable? | USP <797>; 21 CFR 211.68; Joint Commission MM | Clause 6.4 |
| Is there documented chain of custody? | USP <797>; cGMP records | Clause 7.4 |
| Is there a sampling and reporting protocol? | USP <797>, <800> hazardous drug rules | Clause 7.3, 7.8 |
| Is there a quality management system? | All of the above | Clause 8 |
A vendor whose work is performed within ISO/IEC 17025 scope can produce documentation against each of these inspector questions in minutes. A vendor whose work is unaccredited cannot — not because they are incompetent, but because the structural framework that produces the documentation is absent.
Seven questions to ask any environmental monitoring vendor
If your vendor cannot answer all seven of these in writing within five business days, your program is not audit-defensible under post-2023 USP <797> standards. The risk is yours, not theirs.
- Can your vendor produce A2LA accreditation documentation, with a current cert number, for the lab performing your incubation?
- Is the lab named on the cert — and does the scope of accreditation cover the specific testing being performed for your facility?
- Can they show genus-level identification documentation for action-level excursions, per the November 2023 USP <797> requirement?
- Can they produce the chain of custody from sample collection to result reporting, with timestamps, transit conditions, and handoff signatures?
- Can they document personnel competency for the technicians performing your sampling?
- Can they show proficiency testing records for the lab performing your analysis?
- Can they produce a quality management system manual covering deviations, corrective actions, and management review?
The Allometrics Group: end-to-end cleanroom lifecycle from one organization
Three sister entities cover every step of cleanroom and pharmacy compliance from initial qualification through ongoing recertification:
Allometrics Inc. — A2LA Cert 2039.01 — calibration, cleanroom certification, viables collection, BSC and fume hood certification.
Taylor Lake Laboratories (taylorlakelabs.com) — A2LA Cert 7533.01 — accredited biological testing. Microbial enumeration, microbial identification, media fill kit analysis. Closes the chain of custody for viables.
Precision Biotech Solutions (precisionbiotechsolutions.com) — cleanroom commissioning, NEBB-credentialed air balancing (TAB), and Joint Commission TAB support for hospital systems.
When a new cleanroom is built, PBS commissions it. When the cleanroom enters service, Allometrics certifies it on a recurring schedule. When viable samples are collected, Taylor Lake Laboratories incubates them under accredited scope. When the cleanroom comes up for Joint Commission survey, PBS supports the TAB documentation. When equipment in the chain needs calibration, Allometrics performs that work under A2LA Cert 2039.01.
That is the integrated stack. One Group, three accreditation chains, end-to-end coverage. No single competitor in the regional or national environmental-monitoring market delivers all three.