What lot number tracking means
Lot number tracking means recording the specific manufacturer batch used for a product. In a medical spa, that often applies to Botox, filler, biostimulators, peptides, GLP-1 medications, IV compounds, and other clinical supplies.
A complete lot record includes product name, lot number, expiration date, received quantity, remaining quantity, unit cost, and every visit or adjustment that used product from that lot.
Why lot tracking matters financially
Lot tracking is usually discussed as traceability, but it also affects profit. The lot carries the actual product cost. If usage is not tied to a lot, visit-level COGS becomes an estimate instead of a reliable number.
When a provider uses 0.4mL of filler, the practice should know which lot it came from, what that fraction cost, what remains, and whether the remaining product is at expiration risk.
FEFO prevents avoidable waste
FEFO means first-expired, first-out. Instead of using whichever box is closest, the practice intentionally uses the lot with the nearest expiration first.
This matters because injectable and clinical inventory can expire quietly. A medspa that does not enforce FEFO often pays for product twice: once when it buys the lot, and again when expired product forces emergency reordering or margin write-offs.
Spreadsheets struggle with traceability
A spreadsheet can list lot numbers. It is harder for a spreadsheet to keep lot, expiration, remaining quantity, fractional usage, provider, patient visit, and COGS synchronized after every appointment.
Otzaro is built so lot tracking lives inside the operating workflow. Product usage, traceability, inventory depletion, and margin all update from the same source of truth.
A medspa lot tracking workflow should capture
Product, lot number, expiration, unit cost, and quantity received.
Every product movement: usage, waste, adjustment, transfer, and expiration.
Fractional usage tied to the provider and visit where it happened.
COGS and remaining quantity based on the exact lot used.
FAQ
Is lot number tracking required for medspas?
Requirements vary by product, state, and practice model, but lot tracking is a strong operating control for any medspa using injectables or clinical supplies. It supports traceability, expiration control, and accurate COGS.
What is the difference between lot tracking and inventory counting?
Inventory counting tells you how much product is on hand. Lot tracking tells you which specific batch is on hand, when it expires, what it cost, and where it was used.