Not sure if you are asking whether it would be OK to take beef liver capsules before you get tests results?
If so, the same issue applies. Taking any significant iron source is probably not a good idea if you do not know your current status.
Beef liver can be a good way of increasing iron intake. The haem and/or ferritin they contain is absorbed by a different route/pathway to how other iron substances (such as ferrous sulfate or fumarate) are absorbed. It is less likely to cause stomach and digestion issues. However, you need to be careful you don't overdo it as it will contain vitamin A - and too much vitamin A is bad for you.
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