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Blood tests in Houston, TX from $17.99: 24 Quest Diagnostics and Labcorp locations, no doctor's visit

At Quest Diagnostics in Houston, a CBC with Differential is $17.99 and a Hemoglobin A1c $18.99, plus one $6 fee per order and nothing to pay at the draw. There are 24 Quest Diagnostics and Labcorp patient service centers within 20 miles of downtown Houston; the nearest is Quest Diagnostics at 1431 Studemont St, Ste 700, Houston, about 1 mile from the center. Order your tests online, choose Quest or Labcorp at checkout, and walk into any of them with the emailed requisition and a photo ID — no doctor's visit, referral or insurance. Results post to your portal in 1–3 business days. Locations, hours and phone numbers below were checked October 22, 2026.

Browse tests and orderSearch by your own ZIP codeLaboratorios en Texas (en español)
Locations
24 within 20 mi
Labs
Quest Diagnostics · Labcorp
Appointment
Walk-ins at most sites
Per-order fee
$6, nothing at the draw

What blood tests cost in Houston: popular tests, priced at each lab

The tests Texas customers order most (share of TestWell orders from Texas, September 2025 – September 2026), priced for a draw at each Houston lab. Plus one $6 fee per order; nothing to pay at the location.

TestAt QuestAt LabcorpShare of orders
TSH + Free T4$27.99$39.9911.4%
Comprehensive Metabolic Panel$21.49$22.999.5%
Tuberculosis (TB) Blood Test$91.99$91.999.5%
CBC with Differential$17.99$21.997.6%
IGF-1 (Insulin-like Growth Factor)$37.99$37.997.6%
Hemoglobin A1c$18.99$22.995.7%
Vitamin B12$19.99$26.995.7%
Essential Health Panel$189.99$189.994.8%

More tests at Quest and Labcorp in Houston: test numbers and prices

Each link opens the test's page at that lab: the test number printed on the requisition, the price for a draw there, and how to walk in. Prices are per test, before the single $6 fee per order.

At Quest Diagnostics

All 163 tests with a Quest page · Quest Diagnostics price list

At Labcorp

All 148 tests with a Labcorp page · Labcorp price list

What a test costs without insurance: Leptin Test cost · Adiponectin Test cost · PTH Test (Parathyroid Hormone) cost · Nicotine Test (Cotinine) cost · Aldosterone Test cost · CoQ10 Test (Coenzyme Q10) cost · all blood test prices

Quest Diagnostics locations near Houston (12)

Sorted by distance from downtown Houston (ZIP 77002). Hours as listed by the lab on October 22, 2026; confirm before a Saturday or holiday visit.

Labcorp locations near Houston (12)

Sorted by distance from downtown Houston (ZIP 77002). Hours as listed by the lab on October 22, 2026; confirm before a Saturday or holiday visit.

How to get a blood test in Houston

  1. Choose your tests — single markers or a panel — and check out. A licensed physician reviews and authorizes the order, usually within minutes, and the requisition is emailed to you.
  2. Walk into any Quest Diagnostics and Labcorp location above for the lab you picked at checkout. Bring the requisition (on your phone is fine) and a photo ID. Fasting tests are easiest first thing in the morning. 4 of the 24 locations here are open by 7:00 AM on weekdays.
  3. Results post to your TestWell portal in 1–3 business days with reference ranges and a physician review, and you can download the report to share with your own doctor.

Frequently asked questions

Do I need an appointment for a blood draw in Houston?
Most Quest Diagnostics and Labcorp patient service centers in Houston take walk-ins; Quest and Labcorp also let you book a time slot on their sites, which shortens the wait at busy locations. Order your test on TestWell first — the physician-authorized requisition is emailed within minutes — then bring it and a photo ID to any location listed here.
Can I get blood work in Houston without a doctor or insurance?
Yes. Texas allows direct-access testing, and TestWell's licensed physician network authorizes every order as part of the price. Order online, choose Quest or Labcorp at checkout, and walk into any location listed here — no insurance, referral or office visit, with HSA and FSA cards accepted.
How much does a blood test cost in Houston?
At Quest Diagnostics in Houston: CBC with Differential $17.99, Hemoglobin A1c $18.99, plus one $6 lab processing fee per order and nothing at the draw — no draw fee, no physician fee. Prices are set per lab, not per location, so every Houston site of the same lab charges the same; the table on this page shows each popular test at each lab, and panels bundle several tests at a discount.
Which location should I choose — Quest Diagnostics or Labcorp?
Whichever is closer or has hours that fit. Quest Diagnostics and Labcorp are both CLIA-certified national laboratories and results are clinically equivalent; a few specialty tests are available at only one of them, which the test page states. Pick the lab at checkout and the requisition is written for that network.
Can I pay for blood work in Houston with an HSA or FSA?
Yes. Every TestWell test is a qualified medical expense under IRS Publication 502 — pay with the HSA or FSA debit card at checkout, or submit the itemized receipt from your account. For a health FSA the expense counts on the date you are drawn at the Quest Diagnostics and Labcorp location, so a December draw uses this year's balance; HSA money never expires.
How long do results take from a Houston draw?
Most routine results post to your TestWell portal in 1–3 business days after the draw, with each value shown against its reference range and reviewed by a physician; specialty tests take longer, and each test page states its turnaround.