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first of all keep the urine at room temperature at least for five minutes after refrigeration then do according the test require.
You've GOT to refrigerate raw eggs.
No
Yes
yes
Soft cheeses that require refrigeration such as ricotta.
Of course you should
Ambient food is food which is kept and served at the same temperature as room temperature. I.e it is food which does not require refrigeration or heating before eating.
Yes. They are not shelf stable and require refrigeration throughout distribution and storage.
Salt does not spoil, does not require refrigeration.
it means it wont go off or stale does not require refrigeration
Of course, ANY milk product or milk based product needs refrigeration