How did you test it? Are there companies who do a wide range of basic tests for common vitamin deficiencies? Like can I send a sample and them say "you're a bit low in D and marginal in A", or whatever?
How did you test it? Are there companies who do a wide range of basic tests for common vitamin deficiencies? Like can I send a sample and them say "you're a bit low in D and marginal in A", or whatever?