--- title: Calcium, Ionized Test type: test id: calcium-ionized url: "https://www.test-well.com/tests/calcium-ionized" price_usd: 29.99 lab_fee_usd: 6 all_in_usd: 35.99 cpt: 82330 category: Vitamins & Nutrients sample: Blood draw fasting_required: false results_in: "1–3 business days" labs: - Quest - Labcorp orderable: true order_url: "https://www.test-well.com/cart?add=calcium-ionized&utm_source=ai_agent&utm_medium=markdown" --- # Calcium, Ionized Test > Measures ionized calcium — the free, biologically active form of calcium in your blood, separate from the total calcium reported on a metabolic panel, measured from a standard blood draw. At TestWell it costs $29.99 plus a $6 lab fee, needs no fasting, and results post in 1–3 business days. Physician-authorized with no doctor's visit or insurance needed; draw at Quest or Labcorp. ## Key facts | Fact | Value | | --- | --- | | Price | $29.99 + $6 lab processing fee per order ($35.99 all-in for this test alone) | | CPT code | 82330 | | Sample | Blood draw | | Fasting | Not required | | Results | 1–3 business days | | Labs | Quest Diagnostics, Labcorp | | Biomarkers measured | 1 | | Physician authorization | Included — no doctor's visit, referral or insurance needed | | Payment | Card, HSA or FSA; cash-pay only (no insurance billing) | ## What does the Calcium, Ionized test tell you? Measures ionized calcium — the free, biologically active form of calcium in your blood, separate from the total calcium reported on a metabolic panel. About half of the calcium in blood is bound to albumin and other proteins; the rest circulates as free ions, and that ionized fraction is what regulates muscle contraction, nerve signaling, heart rhythm and blood clotting. A total calcium result can be misleading when albumin is low or high, when blood pH is abnormal, or in kidney disease — ionized calcium measures the active fraction directly. It is commonly ordered alongside intact PTH, phosphorus, magnesium and vitamin D when evaluating parathyroid disorders, unexplained high or low calcium, kidney stones, or symptoms such as tingling, cramps and muscle spasms. ## Biomarkers measured - Calcium, Ionized ## Price by lab | Lab | Test price | All-in (with $6 fee) | Notes | | --- | --- | --- | --- | | Quest Diagnostics | $29.99 | $35.99 | Choose at checkout; walk-in patient service centers nationwide (not NY/NJ) | | Labcorp | $29.99 | $35.99 | Choose at checkout; walk-in patient service centers nationwide (not NY/NJ) | Rhode Island is not served. Prices are identical online and in the lab; no draw fee or physician fee is added. ## How much does an Ionized Calcium test cost? An Ionized Calcium test costs $29.99 at TestWell — $35.99 all-in when ordered alone, because the $6 lab processing fee is charged once per order, with no draw fee or physician fee added. Hospital outpatient labs typically bill around $120.00 self-pay for the same test, and often more. With insurance, what you pay depends on your deductible and your plan's negotiated rate; TestWell's price is fixed before the draw and is HSA/FSA-eligible. | Where you order | Price | One test, all-in | Notes | | --- | --- | --- | --- | | TestWell (drawn at Quest or Labcorp) | $29.99 | $35.99 | Includes the one $6 lab processing fee, charged once per order | | Hospital outpatient lab, self-pay (typical) | $120.00 | $120.00 | Reference figure; hospital charges vary widely by facility and are often higher | Lab test codes: Quest test code 306 · Labcorp test no. 004804. ## How do you prepare? No fasting required. Ionized calcium is sensitive to handling, so the lab collects it in a dedicated tube and processes it promptly — nothing extra is needed from you. ## Common questions about the Calcium, Ionized test ### How long does it take to get Ionized Calcium test results? Ionized Calcium test results are typically ready in 1–3 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 Ionized Calcium test? No, fasting is not required for an Ionized Calcium test — you can eat normally and book any time of day. Ionized calcium is sensitive to handling, so the lab collects it in a dedicated tube and processes it promptly — nothing extra is needed from you. ### Where can I get an Ionized Calcium test without a doctor? Order the Ionized Calcium test online from TestWell for $29.99 (plus a $6 per-order lab processing fee) — no doctor's visit, referral or insurance needed. A licensed physician authorizes the order, you walk into any Quest or Labcorp patient service center for the draw, and results arrive in 1–3 business days. ### What is the CPT code for an Ionized Calcium test? The CPT code for an Ionized Calcium test is 82330. You can order it from TestWell for $29.99 — no doctor's visit or insurance required, with results in 1–3 business days. ### What are the Quest and Labcorp test codes for an Ionized Calcium test? The Ionized Calcium test is Quest Diagnostics test code 306, Labcorp test number 004804 (CPT 82330). TestWell orders it under those codes for $29.99 at Quest or Labcorp — no doctor's visit or insurance required, results in 1–3 business days. Codes verified against the labs' catalogs in 2026. ## How to order 1. Add to cart: https://www.test-well.com/cart?add=calcium-ionized&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. Walk into any Quest Diagnostics, Labcorp patient service center — no appointment needed at most sites. 5. Results post to your TestWell portal in 1–3 business days with reference ranges and flags. ## Related - [Biotin (Vitamin B7)](https://www.test-well.com/tests/biotin) — $259.99 - [Calcium](https://www.test-well.com/tests/calcium) — $26.99 - [Copper](https://www.test-well.com/tests/copper) — $31.99 - [CoQ10 (Coenzyme Q10)](https://www.test-well.com/tests/coq10-coenzyme-q10) — $74.99 - [Folate (Vitamin B9)](https://www.test-well.com/tests/folate) — $32.99 - [All Vitamins & Nutrients tests](https://www.test-well.com/tests/category/vitamins-nutrients) - [Full test directory](https://www.test-well.com/tests/directory) --- Canonical page: https://www.test-well.com/tests/calcium-ionized 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.