--- title: Autoimmune Gastritis Panel type: panel id: autoimmune-gastritis url: "https://www.test-well.com/tests/autoimmune-gastritis-panel" price_usd: 199.99 lab_fee_usd: 6 all_in_usd: 205.99 tests_included: 4 biomarkers_measured: 17 category: Iron & Anemia sample: Blood draw fasting_required: true results_in: "3–5 business days" labs: - Labcorp orderable: true reviewed_at: 2026-10-28 order_url: "https://www.test-well.com/cart?add=autoimmune-gastritis-panel&utm_source=ai_agent&utm_medium=markdown" --- # Autoimmune Gastritis Panel > Autoimmune Gastritis Panel bundles 4 tests — Intrinsic Factor Blocking Antibody, Gastrin and Vitamin B12 plus 1 more — for $199.99 plus one $6 lab processing fee (about $50.00 per test). Fast 8–12 hours before the draw; results post in 3–5 business days. Physician-authorized with no doctor's visit or insurance needed; one draw at Labcorp. *The pernicious anemia workup in one Labcorp draw* ## Key facts | Fact | Value | | --- | --- | | Price | $199.99 + $6 lab processing fee per order ($205.99 all-in) | | Versus buying separately | $237.96 for the 4 tests individually — the panel saves 16% | | Tests included | 4 | | Biomarkers measured | 17 | | Sample | Blood draw | | Fasting | Yes — 8–12 hours | | Results | 3–5 business days | | Labs | Labcorp | | Physician authorization | Included — no doctor's visit, referral or insurance needed | ## What does the Autoimmune Gastritis Panel cover? Intrinsic factor blocking antibody, gastrin, vitamin B12 and a CBC with differential — the four tests that show whether the stomach has stopped absorbing B12, in one fasting draw at Labcorp. Autoimmune gastritis is a slow immune attack on the stomach's parietal cells — the cells that make acid and intrinsic factor, the protein needed to absorb vitamin B12. Left unrecognized it ends in pernicious anemia and, sometimes, nerve damage that does not fully reverse. This panel reads the condition from four angles in a single draw. The intrinsic factor blocking antibody is the specific test: positive in roughly half to two-thirds of pernicious anemia, and when it is positive with a low B12 the diagnosis is made. Gastrin is the functional marker: when the acid-making cells are gone there is no acid to switch gastrin off, so it climbs several-fold. Vitamin B12 shows whether absorption is already failing, and the CBC with differential shows whether that has produced the large-cell (macrocytic) anemia or a falling blood count. Together they answer the question most people ordering this have — is my low or borderline B12 a diet problem or an absorption problem — and give a gastroenterologist what they need to decide on endoscopy. The parietal cell antibody, the more sensitive but less specific screen, is sold separately (it is a Quest test); ferritin is the natural add-on if iron deficiency is part of the picture, because the same loss of acid impairs iron absorption. Gastrin requires a 12-hour fast and is raised several-fold by proton-pump inhibitors; see the prep notes. ## Tests included | Test | Biomarkers | Standalone price | CPT | | --- | --- | --- | --- | | [Intrinsic Factor Blocking Antibody](https://www.test-well.com/tests/intrinsic-factor-antibody) | 1 (Intrinsic Factor Blocking Antibody) | $159.99 | — | | [Gastrin](https://www.test-well.com/tests/gastrin) | 1 (Gastrin) | $39.99 | — | | [Vitamin B12](https://www.test-well.com/tests/vitamin-b12) | 1 (Vitamin B12) | $19.99 | 82607 | | [CBC with Differential](https://www.test-well.com/tests/cbc-with-differential) | 14 (WBC, RBC, Hemoglobin, Hematocrit, MCV, MCH, …) | $17.99 | 85025 | ## Price by lab | Lab | Panel price | All-in (with $6 fee) | Notes | | --- | --- | --- | --- | | Labcorp | $199.99 | $205.99 | Choose at checkout | ## How much does an Autoimmune Gastritis Panel cost? An Autoimmune Gastritis Panel costs $199.99 at TestWell — $205.99 all-in, since the $6 lab processing fee is charged once per order and there is no draw or physician fee. With insurance you pay your plan's negotiated rate against your deductible; TestWell's price is fixed before the draw and HSA/FSA-eligible. | Where you order | Price | One test, all-in | Notes | | --- | --- | --- | --- | | TestWell (drawn at Quest or Labcorp) | $199.99 | $205.99 | Includes the one $6 lab processing fee, charged once per order | ## How do you prepare? Fast 12 hours before the draw (water is fine) — gastrin rises for hours after a meal. If you take a proton-pump inhibitor (omeprazole, esomeprazole, pantoprazole, lansoprazole), ask your clinician whether to pause it beforehand; PPIs raise gastrin several-fold. If you receive B12 injections, draw before an injection or at least a week after one. Do not stop a prescribed medication on your own. ## Common questions about the Autoimmune Gastritis Panel ### How long does it take to get Autoimmune Gastritis Panel results? Autoimmune Gastritis Panel results are typically ready in 3–5 business days after your draw at Quest or Labcorp. TestWell emails you the moment they post, and your results dashboard shows each marker against its reference range with a plain-English explanation. ### Do I need to fast, or can I eat before an Autoimmune Gastritis Panel? Yes. Fast 12 hours before the draw (water is fine) — gastrin rises for hours after a meal. If you take a proton-pump inhibitor (omeprazole, esomeprazole, pantoprazole, lansoprazole), ask your clinician whether to pause it beforehand; PPIs raise gastrin several-fold. If you receive B12 injections, draw before an injection or at least a week after one. Do not stop a prescribed medication on your own. The [fasting before blood work guide](https://www.test-well.com/prep/fasting) covers how long to fast, what you can drink, and which results eating changes. ### What can throw off an Autoimmune Gastritis Panel result? Common medications, smoking and nicotine and recent blood donation can change an Autoimmune Gastritis Panel result without anything being wrong. Common medications can lower Vitamin B12 and can raise WBC — check B12 periodically on metformin. Smoking and nicotine can raise RBC and WBC — tell the clinician; a high hematocrit in a smoker is usually smoking, not polycythemia. Recent blood donation can lower RBC and can shift MCV — wait 6–8 weeks after a whole-blood donation for an anemia baseline. Each is explained on our physician-reviewed "Before your test" pages; when one applies, remove it and retest. ### Where can I get an Autoimmune Gastritis Panel near me without a doctor? Order the Autoimmune Gastritis Panel online from TestWell for $199.99 (plus a $6 per-order lab processing fee) — no doctor's visit, referral or insurance needed. A licensed physician authorizes the order, then you walk into any Quest or Labcorp patient service center near you for the draw (the lab locator on our site lists the closest ones by ZIP code), and results arrive in 3–5 business days. ## How to order 1. Add to cart: https://www.test-well.com/cart?add=autoimmune-gastritis-panel&utm_source=ai_agent&utm_medium=markdown 2. Create an account or sign in, confirm your state and preferred lab, pay by card, HSA or FSA. 3. A licensed physician authorizes the order (usually within minutes); the requisition arrives by email. 4. One draw at any Labcorp patient service center covers every test in the panel. 5. Results post to your TestWell portal in 3–5 business days. ## Related - [Baseline Anemia Panel](https://www.test-well.com/tests/anemia-panel) — 5 tests · $74.99 - [Comprehensive Anemia Workup](https://www.test-well.com/tests/comprehensive-anemia-panel) — 8 tests · $169.99 - [All Iron & Anemia tests](https://www.test-well.com/tests/category/iron-anemia) - [Full test directory](https://www.test-well.com/tests/directory) --- Medically reviewed by Youmna DiStefano, MD (Medical Reviewer, TestWell); last reviewed 2026-10-28. Review policy: https://www.test-well.com/reviewers/youmna-distefano-md Canonical page: https://www.test-well.com/tests/autoimmune-gastritis-panel Machine-readable catalog: https://www.test-well.com/api/catalog.json · MCP server: https://www.test-well.com/mcp · Overview for agents: https://www.test-well.com/llms.txt Prices are cash-pay, in USD, and include physician authorization; every order adds one flat $6 lab processing fee. Educational content is not a diagnosis — discuss results with a clinician.