What are they testing for?

[Tywills]

Hi im 23 and went to the doctors for a lump on my testicle Which I’ve had since I was 14 when I may of had glandular fever. I had bloods taken and had a ultrasound scan. I received my test results today. The doctor has said there is 3 4mm cysts so no need for further treatment but  i’ve Had constant swollen neck glands (hard lumps) for 6 months and also flare ups in the groin and under arm. I get occasional night sweats and sweat a lot throughout the day. I also have a dull ache in my abdoman and lower left stomach and my testicle are still painful Doctor has sent me for more bloods today and referred me to haematologist.
What could these symptoms be caused by?
What is the doctor testing for?
Creatine
Liver profile
Bone profile
CRP
Thyroid function
FBC
G.F. Screen
ferritin
B12
Epitien Barr virus
LDH
Vitamin D
Repeat prolactin test as last one was high
From the last lot of bloods.
Thank you for any information :)

[Ken_PA]

Hi, it looks like they're doing two paths of investigation.

1) The cause of the Hyperprolactinemia. Take a look at this "DDx": https://emedicine.medscape.com/article/121784-differential

Bad kidney function is a possible cause, so you have had the creatinine test - as one example.

2) Then they want to know what's causing the neck bumps and related symptoms. So they looked at a possible Epstein Barr flareup - as one example.

Have you had a sonogram  of the neck bumps?