TEL-T17
v1.0 · September 2026
Questionnaire · Blood-test discussion list
Tinnitus nutrient
deficiency screener
Answer a few questions about diet, age, medicines, fatigue, and numbness. The result is a short list of blood tests to ask a primary care clinician about: B12, ferritin, and zinc.
- Inputs
- Diet, age, medicines, symptoms
- Output
- Three tests to discuss
- Method
- NIH ODS fact sheets
- Storage
- No saved answers
Important boundary
This is not a diagnosis. It does not show that a deficiency is present and it does not explain the cause of tinnitus. Ask a primary care clinician to interpret your history and decide whether testing fits. An audiologist can assess hearing and tinnitus.
Answer from memory
What should you discuss?
There are no points and no diagnosis. Each answer is used to explain why a clinician may want to review B12, ferritin, and zinc blood tests in context.
Discussion list
Ask about B12, ferritin, and zinc blood tests
Why these tests are on the list
This is not a diagnosis.
Ask a primary care clinician to decide which tests, if any, fit your history. See an audiologist for hearing and tinnitus assessment. The answers do not show that a deficiency is present.
Method notes
What this screener is for
This page is a structured conversation starter for a person who has tinnitus and is wondering whether a nutrient question belongs in a routine clinical review. It asks about diet pattern, age band, two medication groups that the NIH Office of Dietary Supplements discusses in relation to vitamin B12 status, and two broad symptoms. It then names three blood tests to ask a primary care clinician about: vitamin B12, ferritin, and zinc. It does not produce a probability, a risk percentage, or a label.
The narrow output matters. Tinnitus has many possible explanations, and fatigue or numbness can occur for many reasons unrelated to nutrient status. A browser cannot examine you, review your full medicine list, check a diet in detail, or interpret a laboratory result. The useful action here is to bring a clear question to a clinician. The result says what to ask about and why those questions may be relevant. It does not say that a nutrient is low, that a nutrient caused the tinnitus, or that correcting a laboratory value would change the sound.
Why the questions include diet pattern
Vitamin B12 is naturally present in a range of animal foods. Plant foods do not naturally provide B12 unless they are fortified. That makes the difference between a mixed diet, a vegetarian diet, a vegan diet, and a diet that changes from week to week useful history for a clinician. A diet label alone is not a laboratory result. A person who eats a vegan diet may use fortified foods, and a person who eats animal foods may still have an absorption issue or another reason to have B12 reviewed.
The screener therefore does not score vegan or vegetarian answers as a deficiency. It records the diet context so a clinician can ask about fortified foods, food variety, duration of the pattern, digestive history, and previous blood work. The same principle applies to zinc and iron. The amount in a meal is not the same as the amount absorbed, and the amount absorbed is not the same as a blood result. Food labels and diet descriptions can guide a conversation, but they do not replace testing.
What fortified food changes
Fortification is a detail worth writing down. Some breakfast cereals, nutritional yeast products, and other foods have B12 added to them. The amount varies by brand and serving size. If you use one of these foods, bring the label or a photograph of it to the appointment. The clinician can decide whether that information changes the need for testing. This is why the page uses the phrase “diet context” rather than a stronger claim.
Why age band is included
Age is part of the clinical context for B12. The NIH fact sheet explains that some older adults have more difficulty absorbing the B12 that is bound to food protein. That does not mean that every older person has low B12, and it does not mean that an age band can predict a blood value. The screen only uses age to remind you that a clinician may ask different follow-up questions about food sources, absorption, previous test results, and medicines.
The age bands are deliberately broad: under 50, 50 to 64, and 65 or older. They are not published diagnostic cutoffs and they do not create points. Broad bands keep the tool from implying false precision. If you are close to a boundary, the clinician can use your actual age. If you are pregnant, breastfeeding, have had gastrointestinal surgery, or have a digestive condition, those details should be discussed separately because this short screen does not cover them.
Why metformin and proton pump inhibitors appear
The NIH vitamin B12 Health Professional Fact Sheet lists prolonged use of some medicines, including metformin and proton pump inhibitors, among factors that may be considered when reviewing B12 status. The wording is important. A medicine history is a reason to ask a question, not proof that a blood value is abnormal. The screener uses two familiar medicine groups because people may recognize the group even when they do not remember the exact brand name.
Write the medicine name, dose, start date, and reason for use for your clinician. The page never tells you to stop, reduce, or replace a medicine. A prescribed medicine may be managing an important condition, and a change should be made only with the prescriber. If you are unsure whether a medicine is a proton pump inhibitor, show the package or medication list instead of guessing.
Why fatigue and numbness are handled carefully
Fatigue and numbness or tingling are included because they are useful symptoms to describe when a clinician reviews B12 and iron questions. They are not specific signals. Sleep problems, stress, infection, endocrine conditions, medicines, nerve disorders, circulation issues, and many other factors can be part of the history. This tool does not sort those possibilities and does not attach a score to either symptom.
When describing fatigue, note when it started, whether it is present every day, and how it affects ordinary activity. When describing numbness or tingling, note the body area, whether one or both sides are involved, how long each episode lasts, and whether there is weakness, balance trouble, or a rapid change. A sudden or severe neurological change needs prompt clinical attention rather than a questionnaire result.
Why B12, ferritin, and zinc are the output
Vitamin B12
B12 supports normal blood cell formation and nervous-system function. The NIH fact sheet covers dietary sources, absorption, medication interactions, and laboratory status. The tool includes B12 because diet pattern, age, metformin, proton pump inhibitor use, fatigue, and numbness can all be reasonable history points for a clinician to review together. None of them proves a B12 problem.
Ferritin
Ferritin is commonly used as a marker of stored iron in clinical laboratory work. The NIH iron fact sheet explains that iron status depends on intake, absorption, losses, and life stage. Fatigue has many possible explanations, so the output uses ferritin as a question to discuss rather than a result to predict. A clinician may choose a different panel or add a blood count depending on the history. This page does not prescribe a test order.
Zinc
The NIH zinc fact sheet describes food sources, absorption, and groups whose intake or absorption may need review. Zinc is included because a diet discussion can raise a question about overall nutrient intake, especially when a person has a restricted pattern or a changing appetite. A symptom cannot identify zinc status. A clinician can decide whether a zinc test is useful and how to interpret it with other information.
How to read the result
The result is a conversation list with three parts. First, it names B12, ferritin, and zinc. Second, it lists the answers you gave that make those topics worth mentioning. Third, it repeats the boundary that no deficiency has been established. Read the list as a note for an appointment, not as a self-treatment plan. Take a medication list and, when possible, a short description of your usual diet.
If no answer seems relevant, the result still lists the three tests because the tool is intentionally conservative about its output. Tinnitus by itself is not enough to identify a nutrient cause. Your clinician may decide that no blood test is needed, may choose other tests, or may recommend an audiology or ear examination first. That is a normal part of clinical reasoning, not a failure of the tool.
Limits, privacy, and when to seek care
This page does not send answers to a server and does not store them in localStorage. When you close or refresh the page, the entered answers are gone. The result is not a medical record. If you want to remember it, write down the three test names and the history details you selected, then keep that note private.
The screen does not measure tinnitus loudness, hearing thresholds, balance, ear pressure, or blood chemistry. It cannot separate a ringing sound from a pulsatile sound, and it cannot assess a sudden change in hearing. Arrange prompt clinical advice for sudden hearing change, one-sided new symptoms, a pulse-synchronous sound, severe dizziness, new weakness, or other urgent symptoms. For hearing and tinnitus assessment, an audiologist is the relevant hearing clinician. A primary care clinician can review the broader health history and blood-test question.
What to bring to an appointment
A short written note can make the discussion more useful. Include the date the tinnitus began, whether it is in one ear or both, whether it follows your heartbeat, and whether hearing seems different. Add your usual diet pattern, the names and duration of medicines, and any recent illness or digestive change. If you have older laboratory reports, bring the dates and reference ranges rather than relying on memory.
Bring the result as a question, not as a conclusion: “Would B12, ferritin, and zinc testing fit my history?” The clinician may ask about a blood count, thyroid or metabolic history, bleeding, appetite, sleep, stress, or other symptoms. The clinician may also decide that the tinnitus needs a hearing assessment before a nutrient discussion. Those choices depend on the complete history, examination, and local laboratory practice.
It can help to write down whether the fatigue or numbness is new, stable, or changing. Note anything that makes it better or worse, but do not assume a trigger from one observation. A symptom diary can show timing and context. It cannot establish that a diet, medicine, or nutrient caused the tinnitus. This page is intentionally limited to helping you ask a focused question and remember the relevant background.
Questions about the screener
Does this screener show that I have a nutrient deficiency?
No. The answers only identify questions to discuss with a primary care clinician. A blood test and clinical history are needed to assess nutrient status, and the result does not identify the cause of tinnitus.
Why are B12, ferritin, and zinc on the discussion list?
NIH Office of Dietary Supplements fact sheets describe B12, iron status, and zinc sources, absorption, and groups that may need a closer clinical review. The list is a prompt for a clinician, not a conclusion about your blood levels.
Why do vegan or vegetarian answers matter?
Vitamin B12 occurs naturally in animal foods, while plant foods need fortification to provide it. Vegetarian and vegan patterns can therefore be useful context when a clinician reviews diet history and decides whether testing is appropriate.
Can metformin or a proton pump inhibitor affect the discussion?
The NIH B12 fact sheet lists prolonged use of some medicines, including metformin and proton pump inhibitors, among factors a clinician may consider when reviewing B12 status. Do not change a prescribed medicine because of this page.
Who should I see about tinnitus as well as blood tests?
A primary care clinician can review symptoms, medicines, diet, and blood tests. An audiologist can assess hearing and tinnitus, and an otolaryngologist can assess ear or medical concerns that need specialist review.
Sources
NIH Office of Dietary Supplements, Vitamin B12 Health Professional Fact Sheet. Dietary sources, absorption, medication interactions, and status context.
NIH Office of Dietary Supplements, Iron Health Professional Fact Sheet. Iron sources and factors that affect iron status.
NIH Office of Dietary Supplements, Zinc Health Professional Fact Sheet. Zinc sources, absorption, and status context.