Our vitamin deficiency calculator is a fast, privacy-first screening tool that helps you understand which vitamins might deserve attention based on your vitamin deficiency symptoms, diet pattern, sun exposure, and lifestyle/medical factors. If you were searching for a vitamin deficiency test online or a vitamin deficiency checker, you’re in the right place—this page explains how to use the calculator correctly, what your results mean, and what steps to discuss with your clinician next.
Vitamin Deficiency Calculator
Educational screening to identify vitamins that may deserve attention based on your symptoms, diet, lifestyle and risk factors. Not a diagnosis. For medical advice, testing and treatment, consult a qualified clinician.
Your screening results
Top matches are listed first. Scores reflect how many selected symptoms and risk factors align with each vitamin.
How this calculator works
This calculator uses a rules-based scoring engine developed from commonly taught associations between symptoms, diet, lifestyle and vitamin status. It highlights potential vitamins worth checking—especially A, B-complex (B1, B2, B3, B6, B7, B9, B12), C, D, E, and K. Some minerals can cause similar symptoms; for medication safety and accurate diagnosis, professional evaluation is essential.
Healthy food sources to consider
- Vitamin A: liver, eggs, dairy; orange/dark-green veg (carotenoids).
- B-complex: whole grains, legumes, meat/eggs/dairy, nuts & seeds, leafy greens.
- Vitamin C: citrus, berries, kiwifruit, peppers, broccoli.
- Vitamin D: safe sun exposure, fortified dairy/plant milks, fatty fish, eggs.
- Vitamin E: nuts (almonds), seeds, vegetable oils, spinach.
- Vitamin K: leafy greens (K1), fermented foods/cheeses (some K2).
Related tools on MyMedicineAdvisor
FAQs — Vitamin Deficiency Calculator
Is this a medical diagnosis?
No. It’s an educational screener. Always consult a licensed clinician for diagnosis and treatment.
Which vitamins are covered?
Vitamins A, B1, B2, B3, B6, B7, B9, B12, C, D, E, and K. Some minerals can overlap in symptoms, so a clinician may also check iron, iodine, magnesium and others if appropriate.
Will my data be sent anywhere?
No. All calculations run in your browser and are not sent to our servers.
What tests might a doctor order?
Depending on your case: 25-hydroxy Vitamin D, Vitamin B12, Folate (or RBC folate), and a Complete Blood Count. They may add others.
Can supplements interact with medicines?
Yes. For example, Vitamin K can affect warfarin. Always seek personalized medical advice before starting supplements.
Content is general information only and may not reflect local guidelines. If you’re pregnant, breastfeeding, have chronic illness or take prescription medicines, ask your clinician before changing diet or supplements.
Important: A vitamin deficiency calculator does not diagnose disease. Only a qualified clinician can evaluate your situation, order tests (like vitamin D deficiency or vitamin B12 deficiency labs), and provide medical advice or treatment.
How our Vitamin Deficiency Calculator works (in simple steps)
- Add your details
Choose your diet (omnivore/vegetarian/vegan), sun exposure (a key driver for vitamin D deficiency), life stage (adults, older adults, pregnancy, breastfeeding), and any risk factors (e.g., gut absorption issues, metformin use, PPIs). - Tick symptoms
Select relevant vitamin deficiency symptoms like fatigue, easy bruising, mouth sores, night-vision issues, bone pain, tingling, dry skin, or hair thinning. You can search symptoms quickly. - Analyze
Click Analyze. The vitamin deficiency checker ranks vitamins (A, B-complex, C, D, E, K) by how strongly your inputs match known patterns. It also suggests food sources and a clinician discussion list (e.g., “consider 25-OH vitamin D test” for vitamin D deficiency, or “B12 ± MMA + CBC” for vitamin B12 deficiency). - Plan next steps
Bring the results to your clinician. If appropriate, they may order targeted labs, recommend dietary changes, or discuss supplements after checking interactions and your medical history.
Why trust this vitamin deficiency calculator? It’s rules-based, conservative, and runs entirely in your browser—no data leaves your device.
Who should use a vitamin deficiency calculator?
- People with persistent symptoms (fatigue, easy bruising, frequent infections, mouth ulcers, bone pain, tingling/numbness, hair thinning).
- Vegetarians/vegans who might be at higher risk for vitamin B12 deficiency (and sometimes vitamin D).
- Individuals with low sun exposure (indoors most of the day → higher risk of vitamin D deficiency).
- People with absorption risks (e.g., celiac disease, IBD, bariatric surgery) or on certain long-term medications (metformin → B12; PPIs → B12; anticonvulsants → D; isoniazid → B6; orlistat → fat-soluble vitamins A/D/E/K).
- Older adults (absorption changes can affect B12 and D).
- Pregnant or planning pregnancy (folate/B9 is essential; discuss prenatal supplementation with your clinician).
Top vitamin deficiency symptoms to know
While symptoms overlap, certain patterns commonly appear with specific vitamins:
- Vitamin A: night blindness, dry eyes, dry/scaly skin.
- Vitamin B12: fatigue, tingling/numbness in hands/feet, sore/smooth tongue, mouth sores; may affect mood and memory.
- Folate (B9): mouth sores, tongue changes, fatigue (overlaps with B12—clinicians often assess both).
- Vitamin B1/B2/B3/B6/B7: mouth cracks, dermatitis, rash around mouth/eyes/nose, neuropathy, low energy.
- Vitamin C: bleeding gums, easy bruising, slow wound healing, frequent infections.
- Vitamin D: bone pain, muscle weakness, recurrent illness; low sun exposure is a key risk.
- Vitamin E: rare; neurological symptoms over time.
- Vitamin K: easy bleeding, nosebleeds, prolonged clotting time (discuss urgently if severe).
If you experience severe symptoms (e.g., chest pain, sudden weakness, heavy bleeding), seek urgent care immediately.
What your results mean (and what they don’t mean)
- “High match” ≠ diagnosis. It means your inputs align with a pattern commonly associated with that vitamin.
- Talk to your clinician before starting supplements—especially if you take medicines (e.g., warfarin and vitamin K interactions).
- Consider lab tests where appropriate (e.g., 25-OH vitamin D for vitamin D deficiency, B12 ± MMA + CBC for vitamin B12 deficiency, folate/RBC folate, and others as advised).
Smart next steps after using the vitamin deficiency calculator
- Food-first approach
Try to improve intake from whole foods whenever possible:- Vitamin A: liver, eggs, dairy; orange/dark-green vegetables (carotenoids).
- B-complex: whole grains, legumes, meat/eggs/dairy, nuts and seeds, leafy greens.
- Vitamin C: citrus, berries, kiwifruit, peppers, broccoli.
- Vitamin D: safe sun exposure; fortified dairy/plant milks; fatty fish; eggs.
- Vitamin E: nuts, seeds, veg oils, spinach.
- Vitamin K: leafy greens (K1), some fermented foods/cheeses (K2).
- Check interactions
If you’re considering supplements, verify safety and interactions. (For prescription safety overall, our Prescription Checker and Pill Identifier can help you organize information to discuss with your clinician.) - Review your broader health
Combine insights with other tools:- Symptom Checker for a holistic view of what else might be going on.
- Diabetes Risk Assessment if fatigue or thirst/urination changes are present.
- BMI Calculator + BMR Calculator to plan sustainable nutrition.
- Medicine Dosage Calculator to understand general dosage math (not medical advice).
- Eye Vision Test if you’re noticing night vision issues (a possible vitamin A signal).
Why people search “vitamin deficiency test online” (and how to use this tool responsibly)
People want quick clarity when they feel off—especially with fatigue, frequent infections, or bruising. A vitamin deficiency test online sounds convenient, but most true assessments require clinical evaluation and lab testing. This vitamin deficiency calculator bridges the gap by organizing your signals (symptoms + risks) so you can have a clearer, faster conversation with your clinician.
Evidence-based, privacy-first approach
To keep your experience safe and trustworthy, this vitamin deficiency calculator follows conservative, widely taught associations and links to authoritative fact sheets for deeper reading:
- NIH ODS Vitamin Fact Sheets (Consumer):
- Vitamin D · Vitamin B12 · Folate (B9) · Vitamin C · Vitamin A · Vitamin K
- WHO/National guidelines may vary by country; speak to your local clinician for context.
All calculations are performed in your browser; we do not store your inputs.
When to talk to a clinician now
- Symptoms are severe, worsening, or persistent despite lifestyle changes
- New neurological signs (e.g., progressive tingling, weakness, coordination changes)
- Bleeding symptoms (e.g., frequent nosebleeds, gum bleeding, unusual bruising)
- Pregnancy, breastfeeding, chronic illness, or multiple medications
- Before starting any supplements—especially fat-soluble vitamins (A, D, E, K) which can accumulate
How to read common result patterns
- High Vitamin D match: Low sun + bone/muscle aches + frequent illness → discuss 25-OH vitamin D test; consider fortified foods and safe sun.
- High Vitamin B12 match: Vegan/vegetarian pattern or metformin/PPI use + tingling, mouth changes, fatigue → discuss B12 ± MMA and CBC; review diet/fortified foods.
- Vitamin C signals: Bleeding gums, easy bruising, slow wound healing → review produce intake; ask if vitamin C assessment is appropriate.
- Vitamin K signals: Easy bleeding, nosebleeds, prolonged clotting → urgent clinical discussion, especially if on anticoagulants.
Your clinician might also look at minerals (e.g., iron) and other conditions that can mimic a “vitamin deficiency symptoms” pattern—another reason labs and professional evaluation matter.
How to use this vitamin deficiency checker effectively (quick guide)
- Open the vitamin deficiency calculator above.
- Enter your diet pattern, sun exposure, life stage, and any risk factors.
- Tick all relevant vitamin deficiency symptoms.
- Click Analyze to see your matches.
- Read the “Why this matched” reasons and “What to discuss” suggestions.
- Consider sharing the results with your clinician for a personalized plan and, if appropriate, lab testing.
Related tools on My Medicine Advisor
- Symptom Checker
- Prescription Checker
- Pill Identifier
- Medicine Dosage Calculator
- Diabetes Risk Assessment Tool
- BMI Calculator · BMR Calculator
- Eye Vision Test
- Pregnancy Due Date Calculator
- Asthma Control Test (ACT)
- Kidney Health Checker
- Skin Type Analyzer
FAQs — Vitamin Deficiency Calculator
A vitamin deficiency calculator is a smart starting point—not the final answer. Use your results to ask better questions, fine-tune your diet, and collaborate with a clinician on testing and safe supplementation. If you want a broader perspective on your symptoms, try our Symptom Checker next, and build your overall plan with the BMI and BMR tools.