Medical abbreviations

[Namechangepleas]

Hi all, i have already posted of general health but this is making me so anxious now..

I had a blood test done on Friday, I was told to ring up in a weeks time for results. Received a text yesterday telling me to book an appointment to discuss test results. I got an appointment for Wednesday which I thought was very quick.
I'm now panicking that they have found something and how quick results and appointment is.

I looked on my appointments online and it says this (pic below)
Does anyone know what sh means in medical terms?

I can imagine they are only able to fit a certain amount of characters in the field so meant to say ‘shown’

Or it’s the initials of the person who made the note

S is usually serum, h could be hepatitis (liver) or hemoglobin (red blood cells) but it could also be initials or that they typed a longer word but it got cut down due to number of characters allowed

Okay I've calmed down now.. the receptionists initials are sh 🤣🤣
I've been up all night thinking about this.
Thanks @DismantledKing