Unlike blood, platelets have a short shelf life of only five days. However, the clinical demand is large, and a certain amount needs to be collected every day to ensure the clinical demand.

You can appeal to the local people to donate to the designated address (when donating, the hospital will do it under the condition of ensuring safety)

You can also contact major hospitals in the city to collect a certain amount of platelets for later use. (Take the green channel to ensure that platelets are within the shelf life)