Atropine Sulfate Injection, 1 mg/10 mL Prefilled Syringe

Critical CareVital, 99% service targetPrimary vendor Harborline Pharmaceuticals, lead 1 day, ordered every 3 days00409163010

Stock position

On hand
8 syringe43.6 days of supply
On order
0 syringenothing open
Forecast rate
0.2 syringe/daynext 30 days
Demand over 4 days
1 syringelead time plus review period
Safety stock
8 syringeempirical 99th percentile of forecast error
Reorder point
9 syringebelow: order now
Stockout
Wed Oct 28risk: imminent
Recommended order
1 EAby Mon Sep 14
Inventory value
$66at $8.20 per syringe

How the forecast was made

Intermittent (TSB)off by 2.9 syringe/week on average, under-forecast4% worse than naive

This item is used on fewer than 60% of days, so the forecast is 'how much when it's used' times 'how often it's used', each updated daily.

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 2.9 syringe a week, and it under-forecast by 64% overall. A same-weekday-last-week guess would have been off by 65%. This item had no usage on 71% of days, so the intermittent method is used.

Report card, week by week

Week ofUsedForecastErrorError %
Tue Jul 21102-880%
Tue Jul 2832-133%
Tue Aug 432-133%
Tue Aug 1152-360%
Tue Aug 1882-675%
Tue Aug 2522-00%
Tue Sep 112+1100%
Tue Sep 822-00%
All 8 weeks3412-2264%

Weekly totals in syringe. 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
035todayreport card windowThu Mar 19Wed Oct 14
actual forecast, 80% and 95% range what the model said during the report card windowsyringe/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 8runs out Sat Oct 31tomorrowThu Nov 5
Projected on hand, syringe: 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
L000773Sat Aug 21341$8.200 syringe · $0
L000765Wed Feb 2506$8.200 syringe · $0

Vendors and prices, last 90 days

VendorPart numberVendor descriptionSells byPaid per syringeInvoices90-day spendPairing
Harborline Pharmaceuticals00409163010ATROPINE SULFATE .1 MG/ML SYR EAEA of 1$7.3918$318NDC exact
Cobalt Rx DistributorsCRX-08729ATROPI .1 PFS 10CTPK of 10$7.662$153reviewed 0.90
Summit Clinical ProductsSC-388664ATROPI .1 PFS 10CTPK of 10$8.771$88reviewed 0.90