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TCN2 (Vitamin B12)

The report provides up to 3 personalized recommendations based on your genetic variants analyzed. Purchase a DNA kit to generate your genetic results. If you've already got one, you're all set to continue. View sample report.
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Proven track record: 3+ million analyses delivered

Trusted by 200,000+ users & 2,000+ doctors

Proven track record: 3+ million analyses delivered

Analyzes Key Genetic Variants
Up to 3 DNA-Based, Science-Backed Recommendations

Product features

Note: To generate your personalized report, purchase a SelfDecode DNA kit. If you already have one, you’re ready to proceed.

Understanding Your TCN2 (Vitamin B12) Variants: A DNA Gene Report

Do you eat B12-rich foods but still wonder why your energy, focus, or lab numbers don’t feel “optimal”? Have you ever been told your homocysteine is high—or that your B12 looks normal, yet symptoms persist? Your TCN2 (Vitamin B12) gene helps deliver vitamin B12 into your cells, and understanding your TCN2 genetic variants can reveal whether you may need a more personalized approach to getting enough active B12 where it matters most.

Key Report Highlights

This DNA report analyzes genetic variants in the TCN2 (Vitamin B12) gene and translates your results into 3 personalized recommendations tailored to your genotype. TCN2 encodes transcobalamin, the carrier protein that binds vitamin B12 and transports it into cells, where B12 supports essential methylation reactions—like converting homocysteine to methionine. A compelling takeaway: certain TCN2 variants are linked to lower levels of active B12 (holotranscobalamin) and, in some populations, higher homocysteine—two markers closely tied to cardiovascular and cognitive health foundations.

Personalized, Actionable Recommendations

Your recommendations are personalized to your TCN2 (Vitamin B12) genotype, helping you focus on the dietary and supplement strategies most likely to support healthy B12 status and methylation. Depending on your results, you may see guidance such as prioritizing B12-rich foods (e.g., fish, eggs, dairy, or fortified options) and pairing them with supportive nutrients, or targeted supplement suggestions (for example, choosing an appropriate form and dose of vitamin B12 and timing it consistently). The goal is practical, DNA-informed steps that align with how your body may transport and utilize B12.

User-Friendly Format and Trust

With actionable and easy-to-understand recommendations, the report is designed for seamless integration into your daily life. Its user-friendly format ensures accessibility, making complex genetic data understandable and practical for users at all levels of familiarity with genetic information.

The report is rooted in accuracy and reliability, backed by comprehensive scientific research from reputable sources. It has garnered the trust of over 150,000 users and 1,000+ healthcare professionals. Furthermore, the report complies with HIPAA and GDPR, ensuring your privacy and security are prioritized.

Getting Started

To embark on this journey, simply purchase a DNA kit for an easy at-home sample collection, guaranteeing a hassle-free process. Delve into a personalized approach to wellness and equip yourself with actionable insights to enrich your life and health.

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  1. Brandon B.

    Solid info on how my genes affect b12, plus actionable tips. My only gripe is the section about supplement types wasn’t detailed enough and I wish they’d gone deeper on food choices. Otherwise, I really liked the clear recommendations and layout.

  2. Scott D.

    I got the TCN2 (Vitamin B12) report after my dad was diagnosed with B12 deficiency and neuropathy. I’m not deficient on paper, but I’ve had low mood and constant fatigue. This report helped me understand why “normal” levels might not tell the whole story if transport is less efficient. I followed the vitamin B12 supplement recommendation, increased dietary vitamin B12 with sardines and fortified foods, and cut back to one drink on weekends. After about a month, my focus improved and I’m waking up with more drive. The steps felt realistic and measurable.

  3. Jake T.

    As a vegetarian, I’ve always assumed I was “probably fine” with B12 because I eat eggs and dairy. The TCN2 (Vitamin B12) report made me realize absorption and transport can be the real bottleneck, not just intake. I appreciated the simple, ranked recommendations, especially dietary vitamin B12 options I could actually stick to, plus the reminder to limit alcohol to one drink a day. I added a methylcobalamin supplement and started tracking symptoms. My mouth soreness eased and my workouts feel less draining. It felt personalized without being alarmist.

  4. Tariq E.

    Useful, but dosing unclear.

  5. Priti J.

    I wasn’t sure about these DNA health tools at first, but the vitamin b12 analysis surprised me. The dietary suggestions were clear and actually fit my daily habits. I appreciated there wasn’t just a pile of medical jargon but real actions. Not life-changing, but actually practical advice.