Blue Horizon do test TRAb antibodies, but it is sold as a separate test and is expensive :
Medichecks also do a TSI test as a separate test, also related to Graves' Disease :
I'm not sure how useful a TRAb/TSI test for your sister would be (because I don't know enough). You already know she has Graves' Disease and I'm not sure another test would add anything to what you already know. I'm afraid I don't know enough about Graves' antibodies to tell you the relevance of the TRAb (blocking) antibodies and the TSI (stimulating) antibodies. I've never studied the difference or the relevance to testing both.
Your sister has Hashimoto's Thyroiditis as well as Graves' Disease. Having both Graves' and Hashi's is a horrible thing to have, apparently, and makes treatment particularly difficult.
Look up Hashitoxicosis. It is relevant to your sister. I have to say I'm on very shaky ground here - I don't have personal experience of this and have only picked up tiny bits and pieces. Do a forum search for hashitoxicosis - the search finds 80 references to it.
This old thread from a different forum has far more knowledgeable people than me by a long way :
Going back to the other results...
Vitamin B12 L 203 Deficient <140 pmol/L
Serum Folate 9.19 8.83 - 60.8 nmol/L New Range
You should join the Pernicious Anaemia Society community here on HU and ask them about the above results :
Vitamin D (25 OH) L 14 Deficient <25 nmol/L
This is way too low. An optimal level is about 100 nmol/L. Some people go up to as much as 150 nmol/L.
I really think your sister should show this to a doctor for some heavy duty prescriptions. But if she doesn't want to, then vitamin D3 in various doses is easily sourced on Amazon and other supplement sites.
I know Clutter has been very deficient in the past. Perhaps she could suggest a dose and when to re-test.
To get finger-prick testing of vitamin D alone you could use this link :
Vitamin D3 raises absorption of calcium from the diet. It is essential that calcium goes into bones and teeth rather than getting deposited in soft tissues. To achieve that the body needs plenty of vitamin K2 MK7 (also available online) and magnesium.
There are lots of magnesium supplements available of various different kinds, and people need to choose the type that appeals to them. The required dose is 300mg - 350mg per day.