My link seems to have been edited.
It was to;
emedicinehealth.com/growth_hormone_deficiency/article_em.htm
You'll have to add "http://www." to the front of it if you want to get there.
Why was that link deleted?
You did the scan, that was right,, but you need to check other hormones:
gonadotropins, TSH , ACTH. (In lab need to test free T4, cortisol in the mornig ,testosterone, IGF-1 and TSH , insuline tolerance test, LH, FSH)
Symptoms and signs of Hypopituitarism (in adult) relate to the underlying cause and to the specific pituitary hormones that are absent. gonadotropins are lost first, followed by GH, and finaly TSH and ACTH.
The cause of low GH can be congenital, traumatic, cancer, infiltrative, vascular or infection (Merck manual). Clinical anomalies can occure 5 -15 years after irradiation of brain (ex). You GH is 0.2 for the last 18 years. As been told above , GH bellow 3 is deficient but the significance of your GH being the same for 18 years....I don't know, But now that you're having some symptoms, is time to your ENDO check all hormones, other exams to find the underlying cause.
Should have left a link, sorry.
Not sure this is the best source, but it seems to explain things.
http://www.****.com/
The source I'm looking at says anything below 3.0 is considered deficient.
"Complications of growth hormone deficiency may include the following:
Premature cardiovascular disease
Osteoporosis (a condition involving decreased bone mass and density)
Mental and emotional problems"
That's if it's left untreated.
I don't know what to say about your good muscle development except congratulations.
If it was me I would get it treated and get rid of the low energy and mild depression.