Test According to NICE Guidlines in UK
This was spoted by someone else and may help you. I do not know how useful these tests are but they are the ones that should be available on the NHS in line with the Guidlines.
Investigations recommended by the UK National Institute of Clinical Excellence to exclude medical causes of chronic fatigue.
Tests that should usually be done:
urinalysis for protein, blood and glucose
full blood count
urea and electrolytes
liver function
thyroid function
erythrocyte sedimentation rate or plasma viscosity
C-reactive protein
random blood glucose
serum creatinine
screening blood tests for gluten sensitivity
serum calcium
creatine kinase
assessment of serum ferritin levels (children and young people only).
Additional serology tests that should only be done if the history suggests the possibility of a recent infection:
chronic bacterial infections, such as borreliosis
chronic viral infections, such as HIV or hepatitis B or C
acute viral infections, such as infectious mononucleosis (use heterophile antibody tests)
latent infections, such as toxoplasmosis, Epstein-Barr virus or cytomegalovirus.
The following link is quite interesting, just trying to digest it too:
http://www.nice.org.uk/nicemedia/pdf/CG53QuickRefGuide.pdf see page 8
Hope this helps,
joy