When an emergency kit is hard to press — a gliding force out of specification

1When being hard to press becomes the problem

Gliding force is the force required to depress the plunger of a syringe. For an ordinary injectable, a stiff plunger is an inconvenience and the dose still goes in. This kit, though, is for an emergency in low blood sugar. The setting in which it is used changes what stiffness means.

2Who uses it, and when

A physical property of the device takes its meaning from the urgency of the setting. Glucagon raises blood sugar and is given in severe hypoglycaemia. That context is why stiffness may amount to more than inconvenience.

3The words during twelve-month stability testing

1. 1What was measuredThe gliding force functionality test
2. 2WhenAt the twelve-month point of long-term stability testing
3. 3The resultOut of specification
4. 4How it is recordedA deviation from current good manufacturing practice

The product was not out of specification at release. The record is that testing at twelve months found it outside. Stability testing exists to confirm that a product stays within specification across its labelled period; the same structure as the shelf life in the previous article appears here as a measured value.

4The scale

The firm found it in its own testing, not through a complaint or an inspection, but within the stability programme it is required to run. Firms themselves initiate 98.8% of these recalls, and this is one of them.