What this card shows
The Months of donor sperm cover card shows how many months the donor sperm you can still offer to new recipients would last, if your clinic keeps using it at the rate of the last six complete months. It is a single number.
The card divides two figures:
Stock: the donor sperm devices in storage today that are free to allocate. A device is free to allocate when its availability has no restriction on release, it is not reserved for a recipient, and it is not in quarantine.
Usage: the average number of donor sperm devices thawed for treatment per month over the last six complete months. The current month is not part of the average.
For example, 40 devices free to allocate and 24 devices thawed for treatment over the last six months (4 a month) give 10 months of cover.
Both figures count devices (straws and vials), not thaw events. A device counts as donor sperm when it is recorded as donated; a donor's own samples, frozen for their own future treatment, are not counted.
Read the number as a rough sufficiency check, not a promise. Donor material is not interchangeable, so a recipient can have no suitable match even when the cover looks comfortable, and one large allocation moves the number sharply.
Reading the card
Blank means no donor sperm was thawed for treatment in the last six complete months, so there is no rate to divide by.
Zero means none of the donor sperm in stock is free to allocate: every device is reserved, restricted or in quarantine, or there is none in stock.
The number is always as of today. It does not change with the dashboard's Date filter. The six-month window moves forward at the start of each month.
The Clinic filter at the top of the dashboard narrows both figures to the clinics you choose. Here, clinic means the site the storage tank belongs to, so the usage counts devices thawed from tanks at those clinics.
To see what sits behind the stock figure, use the Donor sperm in stock by release status card further down the Sperm tab. The usage month by month is on the Donor sperm taken out of storage card, in its Used in treatment slice.
Where this data comes from
The card reads the cryostorage records in wawa. A device counts as donated when, on the sample's storage devices, its Freeze purpose or Use status is set to a donation value: Donation or Known donation for the freeze purpose, Donation or Donated to bank for the use status.
Whether a device is free to allocate depends on its Availability, set with Change Availability on the sample page (only No restrictions counts as free), and on whether it has been reserved for a recipient with Reserve in the device's actions menu.
Usage comes from thaws. A device is used in treatment when it is thawed with the Thaw button on the sample page (or Thaw in the device's actions menu), with Reason set to Treatment and the recipient's cycle selected. The Thawed at date decides which month the thaw falls in. Once saved, the thaw shows these details, with the recipient's cycle as Consumer cycle:
A thaw with any other reason, such as Discard, Test thaw or Research, takes the device out of stock but does not count as usage.
Opening this card
In wawa, open Insights from the sidebar, then go to Standard Reports → Donor → Donor and choose the Sperm tab. The Months of donor sperm cover card is at the top of the tab, next to Donor sperm in stock.