Written and maintained by CASRAI Editorial Board
Last updated
General information for clinic and supply staff, not legal or veterinary advice. Regulatory text is cited from the Cornell Legal Information Institute copy of the Code of Federal Regulations, checked 2026-11-01; check the current text before relying on it.
Short answer
Veterinary inventory management is the practice of tracking, counting, storing and reordering the drugs, consumables and feed a practice keeps on hand. Most of it is operational habit, but two categories carry federal record duties: controlled substances, which need written inventories under 21 CFR 1304.11, and veterinary feed directive (VFD) feed, which carries two-year record retention under 21 CFR 558.6.
Definition and scope
In a veterinary practice, inventory covers anything stocked for use or sale: pharmaceuticals, vaccines, surgical and wound-care supplies, diagnostics, and in some practices medicated feed. Inventory management is the set of counts, locations, reorder rules and records that keep that stock usable and accountable. It is distinct from purchasing policy, which is covered in the hospital and clinic equipment procurement policy guide, and from warehouse design, covered in medical warehouse.
How inventory is managed in practice
Federal regulations do not prescribe most day-to-day methods. The routines below are what practice-management software vendors describe as common practice, and they are operational choices rather than legal requirements.
- Routine audits. IDEXX’s published guidance on veterinary inventory lists counting and reconciling stock, checking expiry dates and rotating first-in, first-out as regular audit tasks (IDEXX blog).
- Par level and reorder point. Covetrus defines a par level as the ideal quantity on hand and a reorder point as the threshold that triggers an order (Covetrus software resources). IDEXX suggests setting minimum restock levels from past sales and adjusting them over time.
- Access and ownership. IDEXX also lists limiting access to storage and naming one person responsible for inventory.
Records the law requires for two stock categories
This is the part vendor tip lists usually skip. The table separates what a federal rule states from what is practice.
| Stock category | What the rule states | Source |
|---|---|---|
| Controlled substances | The registrant takes an initial inventory when it first begins dispensing (recording that none is on hand if that is the case), then a new inventory at least every two years. The biennial inventory may be taken on any date within two years of the previous one. | 21 CFR 1304.11 |
| Controlled substances | For each finished form, the inventory records the substance, the form (for example a 10-milligram tablet), the units or volume in each commercial container, and the number of containers. It is taken at the opening or close of business, and that is indicated on the inventory. | 21 CFR 1304.11 |
| Controlled substances | Records are kept at least 2 years from the date of the inventory or record, at the registered or designated location, and are available for DEA inspection. | 21 CFR 1304.04 |
| VFD medicated feed | The veterinarian, distributor and client each retain a copy of the VFD for 2 years; the veterinarian keeps the original in its original form, electronic or hardcopy. A distributor keeps receipt and distribution records of VFD feed for 2 years. | 21 CFR 558.6 |
| All other stock | No federal inventory rule is cited on this page. Counting, par levels and rotation are practice decisions. | – |
Worked example of one controlled-substance inventory line
The fields below follow the items 21 CFR 1304.11 lists. The values are illustrative placeholders, not a real product or stock count.
- Date and time marker: the date of the count, with “close of business” or “opening of business” stated.
- Name of substance: the product name as recorded for the registrant.
- Finished form: for example “10-milligram tablet”.
- Units per commercial container: for example “100-tablet bottle”.
- Number of commercial containers: for example “four”.
Keeping that record in a written, typewritten or printed form at the registered location is what the rule describes; see the regulation for the complete wording.
Where it matters for clinics and supply decisions
- Recalls and expiry. Stock that is counted and rotated is easier to check against safety notices; the FDA enforcement reports guide explains where recall classifications are published.
- Emergency and procedure stock. Kit-style stock has its own contents lists, for example the veterinary clinic first-aid supply checklist and the veterinary surgical pack guide.
- Sourcing. Who supplies the stock is a separate question; see vendor qualification process.
Common misunderstandings
“The two-year count is the whole system.”
The biennial inventory is a minimum interval for controlled substances under 21 CFR 1304.11. It says nothing about how often non-controlled stock is counted, and it is not a substitute for ongoing records.
“Two years of retention applies to everything.”
The two-year figure appears in 21 CFR 1304.04 for controlled-substance records and in 21 CFR 558.6 for VFD copies and distributor records. Those are separate rules for separate stock, held by different parties.
“Every inventory rule in the CFR applies to a clinic.”
Some rules in 21 CFR 1304.04, such as separate-record requirements for Schedule I and II substances, are written for pharmacies and manufacturers. Do not assume a clinic has the same duty without reading who the paragraph addresses.
FAQ
What is veterinary inventory management?
It is the tracking, counting, storing and reordering of the drugs, supplies and feed a practice holds, plus the records that make stock accountable. Federal rules specify records for controlled substances and VFD feed; the rest is practice.
How often must a practice count controlled substances?
21 CFR 1304.11 requires an initial inventory and then a new inventory at least every two years, on any date within two years of the previous one.
How long are veterinary feed directive records kept?
21 CFR 558.6 states that the veterinarian, distributor and client each retain a copy of the VFD for 2 years.
Sources
- 21 CFR 1304.11, Inventory requirements, law.cornell.edu/cfr/text/21/1304.11, checked 2026-11-01.
- 21 CFR 1304.04, Maintenance of records and inventories, law.cornell.edu/cfr/text/21/1304.04, checked 2026-11-01.
- 21 CFR 558.6, Veterinary feed directive drugs, law.cornell.edu/cfr/text/21/558.6, checked 2026-11-01.
- IDEXX, “Veterinary inventory management: 7 tips and best practices”, software.idexx.com/resources/blog/veterinary-inventory-management-7-tips-and-best-practices, checked 2026-11-01 (vendor practice guidance, not regulation).
- Covetrus software resources, definitions of par level and reorder point, software.covetrus.com, checked 2026-11-01 (vendor guidance).
