Explore the
health encyclopedia.

TCN2 helps carry vitamin B12 in the body. A gene result alone cannot tell you your B12 status.

TNF encodes tumor necrosis factor, an immune-signaling protein involved in inflammation, host defense and regulation of cell survival. Its name should not be read as proof that a TNF result indicates cancer.

VDR encodes the vitamin D receptor, which helps regulate gene activity in response to active vitamin D. A receptor variant does not by itself mean receptors are absent or that the blood vitamin D level is low.

VKORC1 encodes vitamin K epoxide reductase, part of the vitamin K recycling system used in activating clotting proteins. It is not simply a vitamin K receptor.

How the Purser approach moves from a nutrient finding to priorities, a manageable plan and reassessment.

How Dr. Purser combines inherited tendencies, current nutrient findings and conventional laboratory results without treating them as the same test.

Follow Dr. Purser’s teaching on folate, B12, sulfur pathways and antioxidant support around homocysteine.

Understand why Dr. Purser teaches glutathione, SOD and catalase as a connected antioxidant team.

Explore the history, production signals, nutrient context and monitoring that shape Dr. Purser’s hormone assessment.

Separate the gene, variant, measured value and clinical interpretation—and learn which questions to bring to your visit.

Encodes the reduced folate carrier, a protein involved in transporting folates into cells.

ALPL encodes tissue-nonspecific alkaline phosphatase, an enzyme important to bone and tooth mineralization and vitamin B6 metabolism. Persistently low alkaline phosphatase can deserve a different evaluation from a general nutrient deficiency.