Nutritional analysis and medicinal-ingredient potency testing are not automatically the same analytical service.
May measure components such as:
PBR's documented capabilities also include vitamins A, C and D for applicable matrices.
Potency testing may require:
PBR's current verified service catalogue does not support a blanket claim that all medicinal ingredients or all vitamins can be tested for potency.
Ask:
Are we trying to characterize the nutritional composition, or verify a specific medicinal ingredient against a defined specification?
That answer determines the analytical approach.