Lidocaine HCl Injection, 1%, 20 mL Vial

Analgesia & AnesthesiaEssential, 95% service targetPrimary vendor Harborline Pharmaceuticals, lead 1 day, ordered every 3 days00143917210

Stock position

On hand
1,361 vial16.6 days of supply
On order
0 vialnothing open
Forecast rate
82.0 vial/daynext 30 days
Demand over 4 days
355 viallead time plus review period
Safety stock
95 vialempirical 95th percentile of forecast error
Reorder point
450 vialabove
Stockout
Thu Oct 1
Recommended order
noneby Tue Sep 29
Inventory value
$1,633at $1.20 per vial

How the forecast was made

Exponential smoothing8% weekly error, under-forecast19% better than naive

A weighted recent average that learns the weekday pattern and any trend. Recent days count more than old ones.

Report card: the model was fit on history up to Tue Jul 21 and scored on the 56 days after. Weekly totals were off by 8% on average (24% day by day), and it under-forecast by 5% overall. A same-weekday-last-week guess would have been off by 9%.

Report card, week by week

Week ofUsedForecastErrorError %
Tue Jul 21624567-579%
Tue Jul 28646567-7912%
Tue Aug 4700567-13319%
Tue Aug 11559567+81%
Tue Aug 18571567-41%
Tue Aug 25566567+10%
Tue Sep 1516567+5110%
Tue Sep 8595567-285%
All 8 weeks4,7774,537-2405%

Weekly totals in vial. Error is forecast minus what was used, so a positive number means the model ran high. This window was hidden from the model when it was fit.

Demand forecast

last 180 days and the next 30
093186todayreport card windowThu Mar 19Wed Oct 14
actual forecast, 80% and 95% range what the model said during the report card windowvial/day

The model only knows the usage history. If you know something it does not, a coming surge, a new service line, a product being dropped, adjust the forecast and the stock math follows.

Projected on hand

0safety stock 95runs out Thu Oct 1tomorrowTue Oct 6
Projected on hand, vial: today's stock plus open orders on their expected dates, minus the forecast, day by day.

Lots and expiry

Earliest-expiry-first simulation against the forecast. Waste is what remains in a lot on its expiry date.

LotQuantityExpiresDaysUnit costProjected waste
L00055448Wed Aug 25345$1.200 vial · $0
L00054913Fri May 19613$1.200 vial · $0

Vendors and prices, last 90 days

VendorPart numberVendor descriptionSells byPaid per vialInvoices90-day spendPairing
Harborline Pharmaceuticals00143917210LIDOCAINE HCL 10 MG/ML VIAL EAEA of 1$1.0631$6,529NDC exact
Cobalt Rx DistributorsCRX-89167LIDOCA 10 SDV 1CTEA of 1$1.0913$2,564reviewed 0.90