Type
Blood Testing
Biomarkers
3
Duration
30 min
Results
4 days
Sample
Blood draw
What's included
3 deliverables in this treatment
- Vitamin B12
- Folate (vitamin B9)
- Additional vitamins and minerals (varies by panel)
Blood test to measure Active Vitamin B12 and Folate levels.
About this treatment
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.
Good to know
- Nutrients Tested
- 1–30+ (varies by panel)
- Fasting Required
- Varies by specific test
- Sample Type
- Blood draw
- Turnaround
- 2–5 business days
- Common Use
- Deficiency screening, supplementation guidance
Who is this for?
Vegetarians and vegans (at higher risk of B12, iron, and zinc deficiency). Older adults, as nutrient absorption decreases with age. Anyone on restrictive diets or with digestive conditions affecting absorption. People experiencing unexplained fatigue, brain fog, poor wound healing, or hair loss. Athletes with high nutrient demands from training.
Preparation required
Fasting for 8–10 hours is recommended for some nutrient tests but not all — check with your provider. Continue taking your regular supplements unless told otherwise (the test measures your steady-state levels). Morning draws are preferred for consistent results.
Panel categories
Biomarkers tested
3Active vitamin B12 is the biologically active form of vitamin B12 that is essential for many physiological processes in the body, including the production of red blood cells, DNA synthesis, and nerve function.
Essential for DNA synthesis, cell division, and red blood cell formation. Folate deficiency causes megaloblastic anemia and, during pregnancy, increases the risk of neural tube defects. Works closely with vitamin B12.
Essential for nerve function, DNA synthesis, and red blood cell formation. B12 deficiency can cause anemia, neuropathy, fatigue, and cognitive impairment. Common in vegans, vegetarians, older adults, and those taking metformin or acid-reducing medications.
About the clinic
Reviews, team and credentials
Independent review links and clinic-reported team information.
2,147 clinic reviews
From independent platforms
Treatment highlights
- Vitamin B12
- Folate (vitamin B9)
+1 more item in What's included