Table of Contents
Educational reference only.This page describes commonly cited DEA and state veterinary board conventions for controlled-substance recordkeeping — it is not legal advice. Requirements vary by state and can change; verify your practice's specific format, entry fields, and retention period against current DEA regulations (21 CFR Part 1304) and your state veterinary board before relying on this as your official record.
What Is a Controlled Drug Log?
A controlled substance log is the running, per-transaction record of every Schedule II-V drug a veterinary practice receives, administers, dispenses, or wastes. DEA registrants are required to keep complete and accurate records of controlled substances under 21 CFR Part 1304 — in day-to-day practice, that requirement is commonly implemented as a bound logbook (or a verified electronic equivalent) kept with or near the controlled-substance storage.
The log exists so that, at any point, the recorded balance can be reconciled against the physical count on hand — which is what a DEA or state board inspection, and your own internal audits, will check.
Required Log Entry Fields
- Date of the transaction
- Patient name and/or client name
- Drug name, strength/concentration, and schedule
- Amount received (if logging incoming stock) or amount on hand at start
- Amount administered or dispensed
- Amount wasted or discarded, with a witness signature for that specific waste
- Running balance after the transaction
- Initials or signature of the person who administered, dispensed, or wasted the drug
Copyable Log Template
Copy this into a document or print it for a binder. Use one sheet per drug per schedule, and keep Schedule II sheets separate from Schedule III-V sheets.
Controlled Substance Administration / Dispensing Log
One sheet per drug, per schedule
Drug Name: __________ Strength/Concentration: __________ Schedule: [ ] II [ ] III [ ] IV [ ] V
DEA Registration #: __________ Storage Location: __________
Log Schedule II separately from Schedule III-V — one sheet per drug per schedule.
| Date | Patient/Client | Amt. Received | Amt. Admin./Disp. | Amt. Wasted | Balance | By (init.) | Witness (waste) |
|---|---|---|---|---|---|---|---|
| ______ | ______________ | ______ | ______ | ______ | ______ | ______ | ______ |
| ______ | ______________ | ______ | ______ | ______ | ______ | ______ | ______ |
| ______ | ______________ | ______ | ______ | ______ | ______ | ______ | ______ |
| ______ | ______________ | ______ | ______ | ______ | ______ | ______ | ______ |
| ______ | ______________ | ______ | ______ | ______ | ______ | ______ | ______ |
| ______ | ______________ | ______ | ______ | ______ | ______ | ______ | ______ |
Page ____ of ____ Reconciled by: ______________ Date: __________
Educational reference reflecting commonly described conventions — not legal advice. Verify against 21 CFR Part 1304 and your state veterinary board.
Schedule II vs. III-V Logging
A widely described DEA recordkeeping convention is keeping Schedule II records physically separate from Schedule III-V records:
Schedule II
Commonly logged on its own dedicated sheet or binder section, separate from Schedule III-V — this separation is a widely described DEA recordkeeping convention (21 CFR Part 1304).
Schedule III, IV, V
Commonly logged together, separate from Schedule II, using the same entry fields — date, patient/client, amounts, running balance, and administering staff initials.
Biennial Inventory
Separate from the day-to-day transaction log, DEA registrants are required to take a new, complete physical inventory of all controlled substances on hand at least once every two years — commonly called the "biennial inventory" — dated within two years of the previous one. This inventory counts everything currently in stock across all schedules, and is distinct from the ongoing reconciliation you should also be doing against the running log balance on a more frequent basis (many practices do this weekly or monthly).
Retention periods for completed logs and inventories vary by state and DEA guidance — verify the current requirement for your practice rather than assuming a fixed number of years.
Logging Best Practices
- Use a bound logbook (physical binder) or a verified electronic system kept with or near the controlled-substance storage — not loose sheets that can go missing.
- Log every transaction at the time it happens, not batched at the end of a shift — this is the single biggest driver of an accurate running balance.
- Always get a witness signature for wasted or discarded controlled substance, ideally from a second credentialed staff member present at the time of waste.
- Reconcile the physical count against the logged running balance on a regular schedule (many practices do this weekly or monthly), not only at the biennial inventory.
- Keep each DEA registrant's individual registration and storage location in mind — a practice-level registration typically does not cover every associate veterinarian, and requirements can vary by state.
- Store completed logs for the retention period required by your state veterinary board and DEA guidance — verify the current requirement rather than assuming a fixed number of years.
Frequently Asked Questions
What has to be logged for controlled substances in a veterinary practice?
Federal recordkeeping rules for DEA registrants (21 CFR Part 1304) require complete and accurate records for controlled substances. In practice, that's commonly implemented as a per-transaction log entry covering: date, patient/client, drug name and strength, amount administered or dispensed, amount wasted, running balance, and the initials of the staff member who handled the transaction — plus a witness signature specifically for any wasted amount. Verify your specific format against current DEA and state board requirements.
Does the log need to be a bound, physical logbook?
DEA guidance describes records that can be kept as a printed binder near the controlled-substance storage or as a verified electronic system — the common thread is that entries are sequential and not easily altered or lost, which is why many practices default to a bound logbook rather than loose sheets. Confirm what format your state board and DEA field office expect before finalizing your practice's approach.
Why do Schedule II drugs get logged separately from Schedule III-V?
Keeping Schedule II records separate from Schedule III-V records is a commonly described DEA recordkeeping convention under 21 CFR Part 1304. Using a dedicated sheet or binder section per schedule (and often per drug) makes reconciliation and inspection review more straightforward.
What is the biennial inventory requirement?
DEA registrants are required to take a new, complete physical inventory of all controlled substances on hand at least once every two years (dated within two years of the prior inventory) — commonly called the "biennial inventory." This is separate from, and in addition to, routine reconciliation of the day-to-day administration/dispensing log.
Who needs a DEA registration to handle controlled substances at a vet practice?
Generally, each individual veterinarian who administers, dispenses, or wastes controlled substances needs their own DEA registration tied to a specific storage/dispensing location — a single practice-level registration typically does not cover every associate veterinarian. State veterinary or pharmacy boards often layer additional requirements on top of the federal rules, so confirm your state's specific rules.
Is this template legally sufficient for a DEA inspection?
This template reflects commonly described logging conventions as an educational starting point — it is not legal advice and isn't guaranteed to satisfy every state or federal requirement on its own. Verify your final log format, entry fields, and retention period against current DEA regulations (21 CFR Part 1304) and your state veterinary board before relying on it as your official controlled-substance record.
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