At-Home Blood Test Kits Compared: Four Services, Same Tests, Different Prices

The two routes: finger-prick kit vs lab draw

There are two ways to buy a blood test without a doctor’s visit, and the route matters more than the brand. Labcorp OnDemand is the lab-draw route: you order online, then walk into one of 2,000+ Labcorp locations for a standard venous blood draw — no appointment, results typically in a day. Everlywell, LetsGetChecked, and myLAB Box are the kit route: a collection kit ships to your door, you prick a finger at home, and you mail the sample back prepaid — results in 2 to 7 days depending on the service. Quest Health is the other lab-draw route (its hs-CRP test lists at $65 plus a $6 physician fee, checked Oct 2026).

The route also decides the menu. Kits cover a narrower list of tests: when the three kit catalogs were checked in Oct 2026, none of them listed a folate test, while the lab-draw services all list one. If the test you want is not in a kit catalog, the draw is the only route that sells it.

Thyroid test, compared

Prices checked Nov 11, 2026 on each vendor’s own site. Labcorp’s $89 is a list price — 20% off with promo code MARKER20 at the time of checking. LetsGetChecked also sells a TSH-only Thyroid Test for $99; the $119 Antibody test is the one comparable to the others. Everlywell’s thyroid test is physician-reviewed.

Read the table by markers, not by headline price. Labcorp’s $89 covers two markers; the others cover four or five for more money. Per marker the kits are cheaper — $23.80 to $37.25 against Labcorp’s $44.50 — but only if you want the extra markers. TPO antibodies matter if Hashimoto’s is the question; they add little if it isn’t. And the cheapest way to get all four thyroid markers is not in this table at all: Labcorp’s own four-marker Custom Thyroid Test is the panel version of the same draw — its price was not re-verified this week, so it is not quoted here.

Vitamin D, compared

Prices checked Nov 11, 2026 on each vendor’s own site. Labcorp’s $99 is a list price — $79.20 with promo code MARKER20 at the time of checking. Everlywell’s $99 is the best value in this table if you want both numbers: it measures vitamin D and hs-CRP in one kit, while Labcorp’s hs-CRP test alone lists at $69 — the two bought separately from Labcorp would list at $168. LetsGetChecked’s $89 is the cheapest vitamin D alone.

Finger-prick vs venous draw: what the evidence shows

The question behind the whole comparison is whether a finger-prick sample is as good as a venous draw. The short answer: for most routine markers, yes — with two real caveats. A 2025 study in Clinical Chemistry and Laboratory Medicine compared 34 routine analytes and found 30 of the 33 assessable markers met the total allowable error criteria from capillary blood; the exceptions were potassium, AST, and coagulation factors, which stayed unreliable via finger prick. A meta-analysis of 26 comparison studies found lab values from self-collected capillary blood agreed well with venous blood overall (pooled correlation 0.89), and agreement on normal-vs-abnormal classification was 0.99. Thyroid values (TSH, free T4) and sex hormones correlated 0.97 to 1.0 with venous values in comparison studies.

The caveats are practical, not analytical. Capillary samples haemolyse more often (17.7% vs 10.6% for venous) and labs reject finger-prick samples far more often — a 2022 systematic review and meta-analysis put rejection at 20–25% for finger prick against under 3% for venous, mostly for insufficient volume, haemolysis, clotting, or tissue-fluid dilution. A rejected kit means re-collection and another wait. Platelets, potassium, and glucose are the markers that perform worst via capillary blood, so a kit is the wrong sample for those questions. For thyroid and vitamin D — the two tests compared above — the evidence supports the kit; for a broad panel, the draw is the safer sample.

What each service is best for

Labcorp OnDemand — cheapest per routine test, widest menu. The draw is cheaper than any kit for the same single test, results land in a day, and the catalog runs to 149 tests — including the ones no kit sells. The cost is the trip: you have to get to a patient service center during its hours.

Everlywell — widest kit catalog. More than 30 kits, from a $49 cholesterol and lipids panel to a $249 women’s health panel, all with free shipping both ways and physician review. Its $399-a-year Everlywell 360 is not a kit — it is an 83-biomarker panel drawn at a Quest location. One test to skip: the $199 Food Sensitivity Test measures IgG reactivity to foods, and the American Academy of Allergy, Asthma & Immunology’s position is that IgG food testing is not scientifically validated.

LetsGetChecked — the most clinical kit service. Results in about 2 to 5 days, 24/7 support, kits shipped in a plain envelope, and a narrow catalog built around hormones, thyroid, cholesterol, and sexual health. The collection rules are the strictest: sample in the morning, Monday to Friday, returned the same day.

myLAB Box — strongest on sexual health. The wellness kits are priced in line with the others, but the catalog’s depth is in STI screening — an 8-panel Uber Box at $209 and a 14-panel Total Box at $379–$409 — with a free physician consult if a result comes back positive. Check state availability before ordering: some tests are temporarily unavailable in New York.

What to check before you order

• CLIA-certified lab. Every service above processes samples in a CLIA-certified lab — that is the floor. If a kit seller does not name its lab certification, do not buy the kit.
• State availability. Everlywell does not sell kits in New York; myLAB Box notes some tests are temporarily unavailable there; LetsGetChecked runs a reduced New York catalog. Check your state on the product page, not the homepage.
• What the price includes. Everlywell kits include shipping both ways; myLAB Box includes free two-way shipping; Labcorp has no shipping because you travel to the draw. Quest Health adds a $6 physician fee on top of its test prices.
• Subscription vs one-time. Everlywell 360 ($399 a year) and Labcorp’s subscribe option (10% off) are repeat-testing prices, not kit prices — compare them against buying the same tests one at a time before committing.
• What the test cannot do. None of these services diagnoses disease. A result outside the range is a reason to see a clinician and repeat the test, not a verdict — and symptoms belong in front of a doctor whether or not you have tested.

The limits of this comparison

Prices were checked on each vendor’s own site on Nov 11, 2026. Prices move, promos change, and catalogs change — check the product page before you order, and treat any price here as a snapshot, not a quote. The thyroid and vitamin D comparisons use the tests each service actually sells, and the marker sets are not identical, so compare markers before you compare prices. This page is general information, not medical advice.