Expiry management is where clinic supply discipline shows up as cash. A stockroom holding three months of a consumable with an eighteen-month shelf life is not a problem; the same stockroom holding three months of a product with a nine-month shelf life is a write-off waiting to happen. First-expired, first-out rotation is the mechanism that prevents it.
Three sentences of answer: FEFO means the lot with the earliest expiry is issued first regardless of where it sits, the practical requirement is a single visible expiry field on every carton plus a periodic sweep, and the calculation a clinic needs is days of cover compared with remaining shelf life. When days of cover exceeds remaining shelf life, the excess will expire before use.
What is the difference between FIFO and FEFO?
FIFO issues the oldest received stock first. FEFO issues the earliest expiring stock first. For most medical consumables the two produce the same result, because stock is received and used in the same order.
They diverge when a clinic receives a lot with a shorter remaining shelf life, or when stock is consolidated across sites or storage rooms. In those cases FIFO can push a short-dated lot to the back while a longer-dated lot moves ahead of it.
The divergence matters most for dated consumables such as biological indicators, chemical indicators, sterilisation packaging with adhesive components, and gloves where the material ages. For those lines, FEFO should be the rule rather than FIFO.
How do you calculate days of cover against shelf life?
Days of cover is current stock divided by average daily use. Remaining shelf life is the expiry date minus today. If days of cover is greater than remaining shelf life, the difference will expire unused.
Worked arithmetic with stated assumptions: a clinic holds 24 boxes of a consumable and uses one box per week, giving 168 days of cover. If the earliest lot expires in 120 days, 48 days of cover will expire in stock, which is about seven boxes.
The same arithmetic run backwards gives a reorder trigger. If the clinic wants no more than 100 days of cover on a line with a nine-month shelf life, the maximum holding is about 14 boxes at one box per week.
| Line | Typical use | Stock held | Days of cover | Action if shelf life is 120 days |
|---|---|---|---|---|
| Biological indicators | 1 test per week | 24 | 168 | Reduce holding; rotate by lot |
| Chemical indicator strips | 1 pouch per tray | High volume | Under 90 | Inside shelf life |
| Sterilisation pouches | By case | 2 cases | Under 60 | Inside shelf life |
| Examination gloves | By case | 6 weeks | 42 | Inside shelf life |
The table's pattern is that low-volume, dated lines are where over-holding accumulates, because nobody notices a slow-moving box.
What is the practical rotation routine?
Mark the expiry month on the outside of every carton in a single visible position, using the earliest date inside the carton if it contains mixed lots. Then sweep one storage area per week rather than the whole store at once, and pull anything inside sixty days of expiry to the front.
A sixty-day pull-forward threshold suits most clinic lines because it gives two months of use to consume the remainder. Where a line is used slowly, use a longer threshold and reduce the holding quantity instead.
Consolidating open cartons is the step that keeps rotation honest. Mixed lots in a single box make an expiry field meaningless, so either keep lots separate or re-label with the earliest date and note the mix.
How should over-holding be reported?
Once a quarter, list the lines where days of cover exceeds remaining shelf life and report the value at risk. That number is the cost of the holding policy, and it is the number that justifies changing a par level.
The response to over-holding is not always to reduce stock. For critical lines where a stockout is worse than a write-off, holding above the calculation may be correct, and the report should say so explicitly rather than treating every excess as an error.
Case-quantity ordering interacts with this directly. Larger orders lower unit cost and raise the expiry exposure, which is why the holding calculation belongs with the price comparison. Sterilization monitoring lines and the B2B wholesale collection are stocked for clinic and institutional buyers, with wholesale and multi-site ordering covering case pricing.
Related reading
Unit of measure traps: case, box, pack and each in medical consumable pricing · Autoclave tape shelf life: why the indicator fades before the adhesive fails · How do Canadian clinics dispose of expired biological indicators?
Hub: Sterilization monitoring collection
Frequently Asked Questions
What is FEFO and why does it matter in a clinic?
First-expired, first-out means the earliest expiring lot is issued first regardless of position. It prevents short-dated stock being pushed behind longer-dated stock when lots are consolidated.
How do I know if I am holding too much stock?
Compare days of cover with remaining shelf life. If a line has 168 days of cover and the earliest lot expires in 120 days, about 48 days of cover will expire in stock.
How often should a clinic sweep for expiring stock?
One storage area per week with a sixty-day pull-forward threshold works well for most lines. Lines that are used slowly need a longer threshold plus a lower holding quantity.
Should I reduce stock on critical lines to avoid expiry?
Not automatically. Where a stockout is worse than a write-off, holding above the calculation is the right decision. Record the reason so the excess is deliberate rather than accidental.
CliniEco Medical is a licensed medical device establishment (MDEL #35334).
0 comments