Quote Originally Posted by copobo
your same strain should yield similar results with resin content. What you control each time is taste, aroma, density, and weight.

I'd be curious about submissions of same strain over different grows to FSL. (or even same strain, same grow, different names for the sake of the test, to test the consistency of the lab)
Denver Relief worked with Westword to conduct just such a test.

Back on the strain gang: Putting MMJ tests to the test - Denver News - The Latest Word

We found drastic inconsistencies between different labs.

We have had varied results for the same strain (as much as a 10% swing) tested at the same lab.

That said, testing is not only effective for determining the THC/CBD ratio, it is good to ensure that there is no problem mold or mildew in the product.

@Colagal
The analogy of the doctor not testing his meds is somewhat apt, except that marijuana has connoisseurs that are very discerning not just for harshness or strength, but appearance, flavor, scent, duration, and the many different ways that the medicine can effect you.

We work very hard to know the differences between the 14-20 house grown strains that we carry at any given time because the differences between them allow patients to find a strain that works for them.

Without using the medicine ourselves we could not share this specialized knowledge with our patients. It is our goal to help everyone find the right strain(s) for their condition so we must have a complete knowledge of the products that we carry.