Get tested with Superpower

If you’ve been postponing blood testing for years or feel frustrated by doctor appointments and limited lab panels, you are not alone. Standard healthcare is often reactive, focusing on testing only after symptoms appear or leaving patients in the dark.

Superpower flips that approach. We give you full insight into your body with over 100 biomarkers, personalized action plans, long-term tracking, and answers to your questions, so you can stay ahead of any health issues.

With physician-reviewed results, CLIA-certified labs, and the option for at-home blood draws, Superpower is designed for people who want clarity, convenience, and real accountability - all in one place.

Key benefits of Vitamin B2 (Riboflavin) testing

• Reveals if you have enough B2 to fuel energy production and cellular health.
• Spots deficiency that may explain fatigue, mouth sores, or skin inflammation.
• Flags risk in people with poor diet, malabsorption, or chronic alcohol use.
• Guides targeted supplementation to restore levels and resolve symptoms.
• Tracks response to treatment, confirming your body is absorbing B2 effectively.
• Protects against anemia by supporting red blood cell production and iron metabolism.
• Best interpreted alongside complete blood count and other B vitamin levels.

What is Vitamin B2 (Riboflavin)?

Vitamin B2, known as riboflavin, is a water-soluble vitamin that your body cannot produce on its own. You obtain it from foods like dairy products, eggs, lean meats, green vegetables, and fortified grains. Once absorbed in your small intestine, riboflavin circulates in your blood and enters cells throughout your body.

Your cells' energy currency depends on it

Riboflavin serves as the building block for two essential coenzymes: FAD and FMN (flavin adenine dinucleotide and flavin mononucleotide). These coenzymes act as electron carriers in the mitochondria, the powerhouses of your cells. They enable the breakdown of carbohydrates, fats, and proteins into usable energy.

It protects cells while powering metabolism

Beyond energy production, riboflavin supports antioxidant systems that protect your cells from damage. It also helps activate other B vitamins, particularly B6 and folate, creating an interconnected network of metabolic support.

Measuring riboflavin in blood reflects your recent dietary intake and your body's current vitamin B2 status, offering insight into your nutritional foundation for cellular energy and metabolic health.

Why is Vitamin B2 (Riboflavin) important?

Vitamin B2 is a water-soluble vitamin that powers your cellular energy factories and protects tissues from oxidative damage. It converts into coenzymes - FAD and FMN - that drive hundreds of metabolic reactions, from breaking down fats and proteins to regenerating glutathione, your body's master antioxidant. Without adequate riboflavin, energy production falters and cellular repair systems weaken across every organ.

Your cells can't make energy without it

When riboflavin levels drop below the typical range, mitochondria struggle to produce ATP, the energy currency of cells. This manifests as persistent fatigue, muscle weakness, and slowed wound healing. The eyes, skin, and mucous membranes are especially vulnerable - cracks at the corners of the mouth, a sore throat, and light sensitivity often emerge as early signs.

Too much is rarely a problem

Elevated riboflavin levels are uncommon because excess is rapidly excreted in urine, often turning it bright yellow. High-dose supplementation doesn't typically cause toxicity but may mask deficiencies in other B vitamins. True excess has no established clinical syndrome.

It connects energy, antioxidants, and other B vitamins

Riboflavin works intimately with B3, B6, folate, and iron to support red blood cell formation, neurotransmitter synthesis, and homocysteine metabolism. Chronic deficiency increases oxidative stress, impairs immune function, and may elevate cardiovascular risk over time. Maintaining adequate riboflavin supports resilient energy metabolism and long-term cellular health.

What do my Vitamin B2 (Riboflavin) results mean?

Low riboflavin levels

Low values usually reflect inadequate dietary intake, poor absorption in the small intestine, or increased metabolic demand that outpaces supply. Riboflavin is essential for energy production in every cell, particularly in tissues with high metabolic activity like the heart, muscles, and nervous system. Deficiency impairs the function of flavin-dependent enzymes, which disrupts cellular respiration and antioxidant defense. This can manifest as fatigue, sore throat, cracked lips, inflamed tongue, and sensitivity to light. Chronic low levels may also impair iron metabolism and contribute to anemia.

Optimal riboflavin levels

Being in range suggests adequate intake and efficient cellular energy metabolism. Riboflavin supports mitochondrial function, helps regenerate glutathione for antioxidant protection, and plays a role in converting other B vitamins into their active forms. Optimal levels typically sit in the mid to upper portion of the reference range, reflecting robust metabolic reserves.

High riboflavin levels

High values usually reflect recent supplementation or high-dose B-complex intake. Riboflavin is water-soluble and excess is readily excreted in urine, often causing bright yellow discoloration. Toxicity is extremely rare because the body does not store large amounts and absorption becomes saturated at higher doses.

Factors that influence riboflavin results

Interpretation depends on dietary patterns, gastrointestinal health, and timing relative to supplement use. Certain medications, including some antipsychotics and chemotherapy agents, can increase riboflavin requirements or interfere with its metabolism.