Vitamin B2 (Riboflavin) Blood Test

Checks vitamin levels to identify deficiencies that may affect energy, immunity, and overall health.

Vitamin and nutrient testing measures the levels of essential micronutrients in your blood — vitamins, minerals, and trace elements that your body needs in small amounts but cannot function without. Common tests include B12 (critical for nerve function and red blood cell production), folate (essential for DNA synthesis and especially important in pregnancy), zinc (immune function, wound healing), magnesium (involved in 300+ enzymatic reactions), and selenium (thyroid function, antioxidant defense). Deficiencies are more common than most people realize, particularly in B12 (affecting up to 20% of older adults), vitamin D, iron, and magnesium. Symptoms are often vague — fatigue, brain fog, poor sleep — making testing the only reliable way to identify specific gaps.