N-Methylhistamine (24hr Urine)
Standard Reference Range
See Lab Results
Optimal Cognitive Range
<200 μg/g creatinine
Clinical Significance
Histamine metabolite — more stable than plasma histamine
Clinician Discussion
Often not included in basic screening panels; request if experiencing brain fog or related symptoms. Optimal ranges for cognitive performance may differ from standard laboratory ranges.
This information is for educational purposes only. Always consult with a qualified healthcare professional.