HSA | FSA CARDS ARE NOW ACCEPTED

Last reviewed: May 12, 2026 Last updated: May 12, 2026

Written by: Jay Hastings , CEO of PlexusDx

Jay Hastings is the CEO of PlexusDx, a precision health company focused on genetic testing, blood biomarker insights, and personalized wellness recommendations. He has more than 20 years of experience across healthcare innovation, genomics, laboratory operations, healthcare investing, and strategic finance. His work has included scaling healthcare startups, leading CLIA lab integrations, and helping expand consumer access to precision health tools.

Medically reviewed by: Jayden Lee, PharmD, EMBA

Jayden Lee, PharmD, EMBA, is the PlexusDx Medical Science Liaison with a PharmD and MBA specializing in pharmacogenomics and clinical product development, with a proven ability to bridge the gap between genomic research and practical patient outcomes. Dr. Lee has more than 10 years of professional experience in clinical pharmacy, academia, and research.

Understanding COQ8A and Coenzyme Q10 (CoQ10)

Coenzyme Q10, or CoQ10, is a molecule your cells use to produce energy and protect themselves from oxidative damage. The COQ8A gene helps make a protein that is important for producing CoQ10 inside cells. Variants in COQ8A can influence how well your body makes or maintains CoQ10, which can affect energy production and antioxidant defenses. Regardless of genotype, supporting CoQ10 through food, lifestyle, and, when appropriate, supplements can help maintain cellular health.

How genetics affect CoQ10

Different versions of the COQ8A gene are associated with varying effects on CoQ10 production:

  • Two copies of the effect allele (AA) may substantially reduce the ability to synthesize CoQ10.
  • One copy of the effect allele (AG) typically means you are a carrier. Most carriers do not experience severe symptoms but this is relevant for family planning and awareness of modest risk.
  • No effect alleles (GG) generally indicates typical COQ8A function and expected CoQ10 biosynthesis.

Genetic interpretation

Two effect alleles (AA)

You have two copies of a rare COQ8A variant associated with a reduced ability to produce CoQ10. This genotype suggests a stronger predisposition toward lower cellular CoQ10 levels, which may affect energy production and antioxidant capacity. Supporting CoQ10 through diet and lifestyle is especially important. Talk with your healthcare provider about whether CoQ10 supplementation, testing, or specialist referral is appropriate for you.

One effect allele (AG)

You carry one copy of a rare COQ8A variant. As a carrier, you usually will not have severe CoQ10 deficiency symptoms, but this information can be useful for understanding personal health risks and family planning. Consider lifestyle and dietary measures that support CoQ10. If you have symptoms such as unexplained fatigue or muscle weakness, discuss testing and possible supplementation with your provider.

Zero effect alleles (GG)

Your COQ8A genotype is the typical form associated with normal CoQ10 production. This does not rule out other causes of low CoQ10, and maintaining a balanced diet, activity, and sleep remains beneficial. If you are concerned about fatigue, muscle symptoms, or have other health conditions, consider discussing CoQ10 with your healthcare provider.

Dietary strategies to support CoQ10

Food is a practical first step for supporting CoQ10. Include a variety of CoQ10-containing and supportive nutrient foods:

  • Fatty fish (salmon, mackerel, sardines) — good natural sources of CoQ10
  • Organ meats (liver, heart) — concentrated CoQ10 content
  • Nuts and seeds (peanuts, pistachios, sesame) — modest CoQ10 and healthy fats
  • Whole grains and legumes — provide B vitamins that help energy metabolism
  • Fruits and vegetables rich in vitamin C and antioxidants (berries, citrus, leafy greens)
  • Selenium-containing foods (Brazil nuts, seafood) — selenium supports antioxidant pathways

Supplement considerations

If diet alone is insufficient or if testing suggests low CoQ10, supplementation can be considered under medical supervision. Common points to discuss with your clinician:

  • Form: Ubiquinone is the traditional form; ubiquinol is the reduced, more bioavailable form and may be better absorbed in some people.
  • Typical dosing: Over-the-counter doses commonly range from 50 to 300 mg per day; clinical needs can vary and your provider will advise an appropriate dose.
  • Timing and absorption: Take with a meal containing fat to improve absorption.
  • Interactions: CoQ10 can interact with certain medications such as blood thinners and some blood pressure drugs. Always review supplements with your healthcare provider before starting.

Lifestyle changes that help CoQ10 function

  • Regular physical activity: Moderate aerobic exercise supports mitochondrial function and energy metabolism.
  • Sleep quality: Adequate restorative sleep helps cellular repair and energy balance.
  • Stress management: Chronic stress increases oxidative load; practices like mindfulness, gentle yoga, or breathing exercises reduce stress-related damage.
  • Avoid smoking and limit alcohol: Both increase oxidative stress and can worsen CoQ10 depletion.
  • Maintain a healthy weight: Excess weight increases metabolic strain and oxidative stress.

When to consider testing

If you have symptoms such as persistent unexplained fatigue, muscle weakness, or a family history suggesting inherited CoQ10-related conditions, discuss testing options with your healthcare provider. Possible evaluations include plasma CoQ10 measurement and metabolic or mitochondrial function assessments. A clinician can interpret results in the context of your overall health, medications, and genetic information.

Practical next steps

  • Review your genotype and this report with your healthcare provider to determine personalized follow-up.
  • Prioritize a diet with fatty fish, organ meats if acceptable, nuts, seeds, and plenty of fruits and vegetables.
  • Consider a CoQ10 supplement only after discussing risks, benefits, dosing, and interactions with your clinician.
  • Adopt regular exercise, sleep, and stress reduction habits to support cellular energy and antioxidant defenses.
  • If concerned about family planning, share your carrier status with a genetics counselor or provider to discuss partner testing and reproductive options.

Important notice

PlexusDx provides educational information about genetic predispositions only and does not provide medical advice. This report is not a diagnosis. Always consult your healthcare provider before making changes to your diet, starting supplements, or pursuing medical testing or treatment based on genetic information.

If this genetic variant is present in your PlexusDx results, the following tests and reports are commonly used to explore it further:

🧬 Genetic Tests:

🧪 Blood Tests:

📄 Genetic Report:

Frequently Asked Questions About CoQ10 and COQ8A rs119468004

How does the COQ8A gene affect Coenzyme Q10 (CoQ10) levels?

The COQ8A gene helps your cells produce CoQ10, which supports energy production and protects against oxidative damage. Variants in COQ8A can influence how efficiently your body makes and maintains CoQ10, potentially affecting cellular energy and antioxidant defenses.

What do COQ8A AA, AG, and GG genotypes mean for my health?

AA (two effect alleles) may substantially reduce CoQ10 synthesis, suggesting a higher predisposition toward lower cellular CoQ10. AG (one effect allele) typically indicates you’re a carrier; severe CoQ10 deficiency symptoms are usually not expected, but it can be relevant for awareness and family planning. GG (no effect alleles) generally indicates typical COQ8A function and expected CoQ10 production, though other causes of low CoQ10 can still occur.

What are the best ways to support CoQ10 if I have a COQ8A effect allele?

Start with diet by including sources like fatty fish (salmon, mackerel, sardines), organ meats (liver, heart), nuts and seeds, whole grains and legumes, and antioxidant-rich fruits and vegetables, plus selenium-containing foods (e.g., Brazil nuts and seafood). Support mitochondrial health with regular moderate aerobic exercise, quality sleep, stress management, avoiding smoking, limiting alcohol, and maintaining a healthy weight. If diet is insufficient or testing suggests low CoQ10, discuss supplementation (ubiquinone vs. ubiquinol, typical OTC ranges ~50–300 mg/day) and medication interactions—especially with blood thinners and some blood pressure drugs—with your healthcare provider.

What tests can help me learn more about CoQ10 and COQ8A rs119468004?

The Optimal Diet and Weight Loss Genetic Test delivers over 295 genetic insights related to nutrition response, body composition, metabolism, and fitness. The Diet and Nutrition Genetic Report translates your results into personalized, actionable guidance. Your healthcare provider can also recommend targeted blood tests based on your specific pathway results and health history to complement your genetic insights with current biomarker data.

Medical and Editorial Standards

Medical review process: This article was reviewed for medical accuracy, scientific clarity, evidence alignment, and appropriate discussion of genetics, medications, supplements, biomarkers, and health-related claims.

Sources and evidence: PlexusDx educational content is developed using peer-reviewed research, clinical literature, reputable medical references, and, where applicable, public health or regulatory guidance. References are included at the end of the article when scientific, medical, or health-related claims are discussed.

Commercial transparency: PlexusDx offers genetic testing, blood biomarker testing, personalized supplement recommendations, and related precision wellness services. Product mentions are intended to help readers understand available options and should not be interpreted as medical advice.

Important disclaimer: PlexusDx educational content is for informational purposes only and should not be used as a substitute for professional medical advice, diagnosis, or treatment. Always consult a qualified healthcare provider before making decisions about medications, supplements, genetic testing, lab testing, or health-related care.