IV Catheter, Safety, 24G x 0.75 in

IV TherapyEssential, 95% service targetPrimary vendor Meridian Medical Supply, lead 1.5 days, ordered every 7 daysMMS-599687

Stock position

On hand
451 each10.1 days of supply
On order
0 eachnothing open
Forecast rate
44.8 each/daynext 30 days
Demand over 9 days
412 eachlead time plus review period
Safety stock
83 eachempirical 95th percentile of forecast error
Reorder point
495 eachbelow: order now
Stockout
Thu Sep 24
Recommended order
1 BXby Mon Sep 21
Inventory value
$677at $1.50 per each

How the forecast was made

Exponential smoothing14% weekly error, over-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 14% on average (25% day by day), and it over-forecast by 4% overall. A same-weekday-last-week guess would have been off by 17%.

Report card, week by week

Week ofUsedForecastErrorError %
Tue Jul 21229311+8236%
Tue Jul 28305311+62%
Tue Aug 4248311+6325%
Tue Aug 11276311+3513%
Tue Aug 18330311-196%
Tue Aug 25338311-278%
Tue Sep 1382311-7119%
Tue Sep 8280311+3111%
All 8 weeks2,3882,490+1024%

Weekly totals in each. 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
060121todayreport card windowThu Mar 19Wed Oct 14
actual forecast, 80% and 95% range what the model said during the report card windoweach/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 83runs out Thu Sep 24tomorrowTue Sep 29
Projected on hand, each: today's stock plus open orders on their expected dates, minus the forecast, day by day.

Vendors and prices, last 90 days

VendorPart numberVendor descriptionSells byPaid per eachInvoices90-day spendPairing
Meridian Medical SupplyMMS-599687IV CATH SFTY 24GX0.75 BX/50BX of 50$1.4413$4,100AI 0.85
Northwind Health DistributionNW7903596IV Catheter, Safety, 24G x 0.75 in - 50/BxBX of 50$1.4613$1,819AI 1.00