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Insulin storage — GPhC CRA MCQ

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HardEndocrine TherapeuticsInsulin storageGPhC CRA

A patient collects insulin glargine cartridges for immediate use and as spares. Which storage plan matches the authorised information?

Educational content. Not a substitute for clinical judgement or local policy.

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Correct answer: D — Keep unused at 2–8°C without freezing; keep in use below 30°C for four weeks

Unused Lantus cartridges should be refrigerated at 2–8°C and must not be frozen. Once in use, a cartridge is kept below 30°C, protected from direct heat and light, and used within four weeks; it should not be refrigerated in the pen. Heat and freezing can reduce potency. The product-specific limit matters because storage periods differ between insulin formulations.

Reference: Lantus 100 units/mL SmPC: https://www.medicines.org.uk/emc/product/2376/smpc