A 25-hydroxy vitamin D (25-OH D) blood test costs $29 to $69 at direct-pay lab services — the same test your doctor orders, run at the same Quest or LabCorp analyzer, without the office visit markup. Here's what each major online service charges, who should test, and how to read your result.
Verified cash price (Aug 2026): HealthLabs 25-hydroxy vitamin D — $59. Same assay Quest/LabCorp run for your doctor, no office-visit markup.
Order Vitamin D Test at HealthLabs → Compare at RequestATest →Updated: August 12, 2026 • Prices verified August 2026, subject to change
The Cost Gap
The 25-hydroxy vitamin D assay is one of the highest-volume individual tests in U.S. labs — Quest Diagnostics and LabCorp run millions per year each. At that scale, the reagent cost per sample is low. What you actually pay when you get tested at a traditional physician's office reflects the office visit ($150–$350 for uninsured patients), the facility fee, and a negotiated-for-insurance chargemaster rate that uninsured patients can get hit with at full ticket price.
Direct-pay online lab services skip the office visit entirely. A licensed physician still authorizes your order (required by law in most states), but it's bundled into the flat price. You order online, walk into a Quest or LabCorp draw station with your requisition barcode, have a standard blood tube drawn, and see results in a private online portal 1–3 business days later. Same lab. Same assay. Roughly one-quarter the all-in cost.
For a single-analyte test like 25-OH D, the direct-pay model is about as clean as it gets. There's no "which panel did I pick" ambiguity — every reputable service orders the same test, against the same reference ranges, using the same LC-MS/MS or immunoassay methodology at the same two reference labs.
One note on test naming: the test you want is called "25-hydroxy vitamin D" or "25-OH D" or "calcidiol." You do not want "1,25-dihydroxy vitamin D" (that's the active form and is a specialty test, not screening). If a provider listing uses unclear naming, check that it specifies 25-OH / 25-hydroxy before ordering.
2026 Price Comparison
Prices reflect direct-pay cash prices as listed by each provider in August 2026. All in-lab options use Quest Diagnostics or LabCorp; at-home kits ship to a partner CLIA-certified lab. Draw fees of $6–$10 may be separate at some services.
| Provider | Test | Price | Collection | Turnaround |
|---|---|---|---|---|
| RequestATest | 25-Hydroxy Vitamin D | $39–$49 Best | In-lab (Quest / LabCorp) | 1–3 business days |
| HealthLabs | Vitamin D, 25-Hydroxy | $49–$69 | In-lab (Quest) | 1–3 business days |
| WalkInLab | Vitamin D (25-OH) | $45–$65 | In-lab (Quest / LabCorp) | 1–3 business days |
| Ulta Lab Tests | 25-Hydroxy Vitamin D | $29–$45 Lowest | In-lab (Quest) | 1–3 business days |
| EverlyWell | Vitamin D Test (at-home) | $49–$79 | At-home finger-prick kit | 5–7 days after sample return |
| LabCorp OnDemand | Vitamin D 25-OH | $55–$79 | In-lab (LabCorp) | 1–3 business days |
| QuestDirect | Vitamin D, 25-Hydroxy | $59–$89 | In-lab (Quest) | 1–3 business days |
| MyLab Positive | Vitamin D 25-OH | $39–$59 | In-lab (Quest) | 1–3 business days |
| Prices verified August 2026, subject to change. All listings are for 25-hydroxy vitamin D (calcidiol) — the standard screening test. Ranges reflect standard vs. promotional pricing and state variation. | ||||
The ranges above cover promotional swings and state-market variation. For exact advertised stickers, here are the spot prices recorded in our most recent verification sweep:
Recorded from each provider's public pricing page as part of our Lab Test Price Index. Current range: $46.95–$135.
| Provider | Test as listed | Cash price | Verified |
|---|---|---|---|
| HealthLabs | Vitamin D 25-Hydroxy (Calcidiol) Blood Test | $59 | Aug 2026 |
| Walk-In Lab | Vitamin D 25-Hydroxy Blood Test | $59 | Aug 2026 |
| Personalabs | Vitamin D 25-Hydroxy Blood Test - LabCorp | $135 | Aug 2026 |
| DiscountedLabs | Vitamin D ( 25OHD ) | $57 | Aug 2026 |
| RequestATest | Vitamin D 25-Hydroxy Blood Test | $69 | Aug 2026 |
| Ulta Lab Tests | Vitamin D 25-Hydroxy Total Test | $46.95 Lowest | Aug 2026 |
Prices verified August 2026; coupon codes and separately billed draw fees excluded. Sources and methodology: Lab Test Price Index.
Want the best-priced in-lab vitamin D test? RequestATest and Ulta Lab Tests both sit at the bottom of the range with reliable Quest/LabCorp draw-station coverage nationwide.
Check Vitamin D Test Price at HealthLabsGet the quarterly price-drop alerts and a re-test reminder when it's time to re-check — roughly one email a quarter.
The Right Test
Vitamin D exists in several forms in the body, and the two main lab tests measure different things entirely. Confusing them is a common mistake and an expensive one.
This is the correct screening test. 25-OH D is the storage form of vitamin D in your liver and blood. It has a half-life of about 2–3 weeks, which makes it stable enough to reflect your overall vitamin D status from the past 1–2 months. Every major medical society that has issued guidance on vitamin D testing — the Endocrine Society, the US Preventive Services Task Force, the Institute of Medicine — specifies 25-OH D as the test to order.
This is the wrong test for screening. It measures the active hormonal form of vitamin D, which has a half-life of only 4–6 hours and is tightly regulated by parathyroid hormone. Calcitriol can appear perfectly normal even when your 25-OH D is severely deficient, because the body will keep converting stored vitamin D into the active form until the storage pool runs out. 1,25 testing has specialty uses (diagnosing certain kidney diseases, sarcoidosis, or specific calcium-metabolism disorders) but it's not a screening test. It also costs substantially more — typically $150–$300.
Every direct-pay lab service listed in this guide sells 25-OH D as the default "vitamin D test." Just confirm the listing says "25-hydroxy" or "25-OH" before paying.
Buyer Profiles
Four common profiles where a 25-OH D test delivers meaningful information.
You've never had a vitamin D level measured and have some combination of risk factors: indoor work, northern latitude (above roughly 37° N), darker skin, limited sun exposure, age 65+, or a family history of osteoporosis. A baseline 25-OH D establishes where you're starting. Expected cost: $29–$69. Retest in 2–3 years if normal, or sooner if you change supplementation.
A prior test showed you deficient (under 20 ng/mL) or insufficient (20–29 ng/mL), you started supplementation 2–3 months ago, and you want to confirm the dose is working. Retest at 8–12 weeks after starting a new regimen — that's roughly 3 half-lives and enough time for blood levels to stabilize. Expected cost: $29–$69.
You've been on a consistent vitamin D dose for at least 6 months, feel fine, and want an annual check to confirm you're still in range and not trending toward either deficiency or toxicity. Expected cost: $29–$69. Best time to test: late winter (February–March in the Northern Hemisphere), when endogenous production is at its lowest and the reading is most conservative.
You have symptoms that overlap with vitamin D deficiency — fatigue, bone aches, low mood, frequent infections, muscle weakness — and want to rule D deficiency in or out as a factor before chasing other investigations. A vitamin D test is cheap, quick, and commonly turns up an actionable finding. Expected cost: $29–$69.
Reading Your Results
Most U.S. labs report 25-OH D in ng/mL (nanograms per milliliter). Some international labs and a few U.S. functional-medicine labs report in nmol/L (multiply ng/mL by 2.5 to convert). Reference ranges are broadly consistent across labs, with minor variation.
Season matters. 25-OH D follows a natural seasonal cycle — highest in late summer (August–September) and lowest in late winter (February–March). A summer reading of 40 ng/mL in someone who gets meaningful sun exposure is a reasonable result. The same 40 ng/mL reading in February suggests you're synthesizing enough to maintain that level even without summer sun, which is a stronger baseline.
Supplement dose doesn't map linearly to blood level. The rule of thumb is that each 1,000 IU of daily vitamin D3 raises 25-OH D by roughly 5–10 ng/mL over 8–12 weeks — but individual response varies widely based on body mass, baseline level, gut absorption, and genetics. Retest to confirm, don't assume.
This section is a reading aid, not medical advice. Discuss abnormal or unexpected results with a licensed clinician before significantly changing your supplementation.
Retest Cadence
If you're only going to test once a year, make it late winter. That's when your level is at its lowest and gives you the most conservative read of your status.
Ready to order? RequestATest offers 25-OH vitamin D at $39–$49 with same-day requisitions and 4,000+ Quest and LabCorp draw stations nationwide.
Order 25-Hydroxy Vitamin D TestCommon Questions
A 25-hydroxy vitamin D test at a direct-pay lab service typically costs $29–$69. At-home kits price at $49–$79. The same test through a doctor's office for an uninsured patient often bills at $80–$200 before the office visit. Prices verified August 2026.
Yes — when people search for a vitamin D3 test price, the test they need is the same 25-hydroxy vitamin D test priced on this page. The 25-OH assay measures your combined vitamin D status from both D3 (cholecalciferol, from skin and animal sources) and D2 (ergocalciferol, from plants and some supplements); most labs report the total, and some itemize D3 and D2 separately on the same result. There is no cheaper separate "D3-only" screening test worth ordering — a D3 test costs the same $29–$69 direct-pay range shown in the comparison table above.
25-OH D (calcidiol) is the storage form of vitamin D in your body. It reflects your total vitamin D status from both dietary intake and skin synthesis. It has a 2–3 week half-life, which makes it stable enough to report meaningful results. The active form (1,25-dihydroxy) is tightly regulated and can read normal even when total stores are deficient — it's not a screening test. Every major medical society specifies 25-OH D as the right test.
People with limited sun exposure, darker skin tones, northern latitudes, age 65+, a history of osteoporosis or malabsorption (celiac, Crohn's, bariatric surgery), anyone with unexplained fatigue or bone aches, and anyone on vitamin D supplementation who wants to confirm the dose is working.
Normal baseline with no risk factors: every 2–3 years. Starting new supplementation: retest at 8–12 weeks. Stable on established supplementation: annually. Correcting a deficiency: every 2–3 months until at target. Testing late winter gives the most conservative annual read.
Under 20 ng/mL: deficient. 20–29 ng/mL: insufficient. 30–60 ng/mL: target range for most adults. 60–80 ng/mL: above average. Above 100 ng/mL: approaches the upper safe limit and warrants re-evaluation of supplementation. Season, baseline, and individual absorption variability all affect the number — so a single reading is a snapshot, not a verdict.
No. The 25-OH vitamin D test doesn't require fasting. If you're bundling it with a lipid panel or fasting glucose, fast for those — but the vitamin D measurement itself is robust to recent meals.
The same 25-OH D assay, run at the same Quest or LabCorp analyzer, costs $29–$69 direct or $80–$300+ through traditional channels. Order online, visit a local draw station, and see results in 1–3 days.
Order Vitamin D Test at HealthLabsFrom $39 • HSA/FSA accepted • Results in 1–3 days
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