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This effectively indicates how many days stock you are holding in your inventory.
You should set your ideal stock and ISI levels in conjunction with your Blood Service's Transfusion Medicine Service.
Over a 6-month period, the Blood Service sums the total of a product (eg, red cells) that we have distributed to you.
Divide this by the number of working days in 6 months based on a 6 day week (108 days). This provides the average daily issue or ADI.
Then divide how much stock you have by the ADI and this provides the ISI.
Enter the sum total of a product we have distributed to you over a 6 month period, and the number of stock you have for this product.
| Total of distributed product over 6 months | |
| Number in stock | |
| Average daily issue: 0 units per day. | |
| Issuable stock index: 0 days of stock. | |
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