What does "abnormal liver function" mean?

Okay, I had tonsillitis very badly a couple of weeks ago so the doctor gave me a blood test to find out if it was caused by glandular fever. I phoned up earlier today to get the results and all they told me was that i had an "abnormal liver function" and that i should make a phone appointment with a... show more Okay, I had tonsillitis very badly a couple of weeks ago so the doctor gave me a blood test to find out if it was caused by glandular fever. I phoned up earlier today to get the results and all they told me was that i had an "abnormal liver function" and that i should make a phone appointment with a doctor as soon as possible.

I just need to know what they meant by this and whether to be worried or not, i have a tendency to worry too much!

Thanks in advance
Update: The default category for this was "cancer"! :O

How likely is this!?
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