THE PURSER WELLNESS LIBRARY

Let’s explore Genetic variants / SNP findings — lab reference

A COURSE FOR YOUR CURIOSITYGenetic testing, one term at a time

4 chapters, at your pace

Explore the course

730 discoveries for your curiosity54 matching listings grouped; alternative sources stay available.

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Nutrient referenceSep 23, 2026

Vitamin D

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…n immune, hormone and bone-related teaching. The conversion-genetics chapter includes VDR, which concerns the vitamin D receptor. This is distinct from measuring a vitamin D blood level. How Dr. Purser connects the pieces The course uses th…

Nutrient referenceSep 23, 2026

Zinc

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…ng to your visit How does this recommendation fit my copper findings and the zinc already present in my products? What to track and reassess Track the intended goal, tolerance and the clinician’s plan for mineral follow-up. Persistent sympt…

Gene referenceSep 23, 2026

AOC1

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…mine: making it, responding to it, clearing it Dr. Purser’s genetics reference places AOC1 in the histamine-clearance part of the gut and immune story. The enzyme it encodes, diamine oxidase, helps break down histamine and related amines. T…

Gene referenceSep 23, 2026

BHMT

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…why Dr. Purser looks at several pathways together: the same laboratory marker can sit at the intersection of more than one nutrient-dependent process. The presence of a variant is not, by itself, a reason to add betaine. A question to bring…

Gene referenceSep 23, 2026

DHFR

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…c acid, folic acid and methylfolate are not interchangeable labels: they enter folate chemistry differently. The clinical conversation should include the actual supplement, dose, tolerance, B12 status and relevant medicines rather than assu…

Gene referenceSep 23, 2026

FUT2

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…the same conversation. Those connections do not make an IBS label, Crohn’s disease or another diagnosis interchangeable, and a common variant is not a substitute for a digestive workup. A question to bring to your visit Which part of my his…

Gene referenceSep 23, 2026

GSTO1

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… teaching. The useful connection is between glutathione availability, oxidative workload and the larger detoxification network. A marker cannot identify a particular toxin exposure or prove that an antioxidant enzyme is absent. A question t…

Gene referenceSep 23, 2026

HDC

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… Histamine production is one part of the circuit The Purser genetics reference describes HDC as the enzyme step converting histidine to histamine. In the teaching map, this is the production side of the circuit, separate from AOC1-mediated …

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