Testing
Here are some testers that are in a book called the The Queen of Fats Susan Allport. I would suggest if of interest it would be better to do it through somebody who is experienced in these matters. Ideally you would need to look at fat tissue content too but I do not know if this is available.
Please let us know how you get on as I have only read about this. I have found somewhere in the UK and will in due course try it out.
I have no idea about these suppliers. I simply re list what is in the above book (which is informative and well written)
Omegametrix.com $115?
YourFutureHealth.com
Nutrasource Diagnostics Guelph
How much to take. You will get a host of answers. My suggestion would be 2grams DHA a day in fish oil, and try and balance the omega threes and sixes. (look at label and check A and D content). This is again complex. It is about balance. In a perfect diet with adequate supplies and the correct balances in the body you would not need as much but you are likley to have high omega six in fat stores.
Some saturates are OK little butter or coconut.
Label watch and try and balance the threes and sixes. Check here
http://www.nutritiondata.com/
Flax seed grind fresh and add it to anything. (ensure adequate water as can dehydrate if water supply is not adequate - also good source fibre soluble and non-soluable). Please check the posts on flax on this site and talk to your onc as there are vigorous arguments about the pro and cons of flax seed as against oil/
There are those that express concerns about canola and hemp. Hemp due to potential contamination with canaboids. They suggest canola may have negatives. I cannot give you any definitive answers as I simply have not read or seen definitive trials - which is not to say they do or don't exist.
I actually like the generality of his book found it very helpful and would recommend it. He has a newer version.
http://www.westonaprice.org/bookreviews/smartfats.html. I would agree with the generality of comments on saturated fats - and strict moderation.
The AA omega three issue is more complex as both AA and DHA are necessary to brain function and
some do not make enough AA (complex !!!).
But the key is to balance the threes and sixes.
I have my own book (good or bad) which will be coming out soon which tries to answer some of these questions.
RB