Make sure to refrigerate your crab soup so you can reheat and enjoy it again. Generally, if chilled, seafood can be reheated and consumed no more than 4-5 days after the meal was first prepared.
Be sure to store it in a sealable container to avoid spoiling the rich character of the crab meat. Reheat it slowly and over a low heat, without boiling, until it becomes piping hot.
As always, use your judgement before deciding whether to reheat and consume. The usual risks when reheating seafood should be considered and it’s important to check for any signs of expiry, such as any change in smell.