Hormone Health Hub: Expert Insights on Testing, Balance & Better Living — DUTCH style testing

Brain Chemistry Balance: When Neurotransmitter Testing Changes Lives - from brain fog to focus, see how tailored insights spark calm, clarity and wellbeing.

Dried urine testing is rapidly becoming the preferred method for neurotransmitter and hormone assessment — but collection timing is everything. In this clinical overview, Dr. Kate Placzek of ZRT Laboratory explains why a single morning urine sample cannot substitute for a 4-time-point collection, how neurotransmitters like epinephrine and norepinephrine follow distinct diurnal rhythms, and why interchanging the first and second morning voids can produce grossly inaccurate results.