Labcorp at 427 W 20th St, Ste 504, Houston, TX
Labcorp patient service center, 4 miles from downtown Houston. Open Mon–Fri 8:00AM – 4:30PM · Sat–Sun closed. Order your tests on TestWell, choose Labcorp at checkout, and walk in 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. Address, phone and hours were read from the lab's listing on October 10, 2026.
- Address
- 427 W 20th St, Ste 504, Houston, TX 77008
- Phone
- 713-869-7206
- Appointment
- Walk-ins at most sites · book on Labcorp's site to skip the wait
Hours at Labcorp, 427 W 20th St
As listed by the lab on October 10, 2026; confirm before a holiday or Saturday visit.
| Monday | 8:00AM – 4:30PM |
|---|---|
| Tuesday | 8:00AM – 4:30PM |
| Wednesday | 8:00AM – 4:30PM |
| Thursday | 8:00AM – 4:30PM |
| Friday | 8:00AM – 4:30PM |
| Saturday | Closed |
| Sunday | Closed |
How to get a blood test at this Labcorp location
- Choose your tests and check out, picking Labcorp as your lab. A licensed physician authorizes the order, usually within minutes, and the requisition is emailed to you — one $6 lab processing fee per order, nothing to pay here.
- Come to 427 W 20th St, Ste 504 during the hours above with the requisition (on your phone is fine) and a photo ID. Fasting tests are easiest first thing in the morning.
- Results post to your TestWell portal in 1–3 business days with reference ranges and a physician review; download the report to share with your own doctor.
Popular tests drawn at Labcorp in Houston — prices at Labcorp
The tests Texas customers order most, September 2025 – September 2026, priced for a Labcorp draw. Plus one $6 fee per order.
| Test | Price at Labcorp | Share of orders |
|---|---|---|
| TSH + Free T4 | $39.99 | 11.4% |
| Comprehensive Metabolic Panel | $22.99 | 9.5% |
| Tuberculosis (TB) Blood Test | $91.99 | 9.5% |
| CBC with Differential | $21.99 | 7.6% |
| IGF-1 (Insulin-like Growth Factor) | $37.99 | 7.6% |
| Hemoglobin A1c | $22.99 | 5.7% |
Other locations near 427 W 20th St, Ste 504
- Quest Diagnostics1.6 mi
1631 North Loop W, Ste 170, Houston, TX 77008
Weekdays 7:00AM – 5:00PM
- Labcorp1.8 mi
1919 North Loop W, STE 172, Houston, TX 77008
Weekdays 8:00AM – 4:30PM
- Quest Diagnostics1.8 mi
1919 North Loop W, Suite 125, Houston, TX 77008
Weekdays 6:30AM – 5:00PM · Sat 8:00AM – 12:00PM
- Quest Diagnostics2.2 mi
1431 Studemont St, Ste 700, Houston, TX 77007
Weekdays 8:00AM – 5:00PM
- Labcorp5.6 mi
1200 Binz St, Ste 140, Houston, TX 77004
Weekdays 7:30AM – 4:30PM
- Quest Diagnostics5.6 mi
1200 Binz St, Ste 115, Houston, TX 77004
Weekdays 7:00AM – 5:00PM
Frequently asked questions
- What are the hours at Labcorp 427 W 20th St in Houston?
- Mon–Fri 8:00AM – 4:30PM · Sat–Sun closed (as listed by the lab on 2026-10-10). Hours change around holidays — confirm before a Saturday or early-morning visit at 713-869-7206.
- Is Labcorp 427 W 20th St open on Saturday?
- No — this location is closed on Saturday as of 2026-10-10. Quest Diagnostics at 1919 North Loop W, Suite 125 (1.8 mi) has Saturday hours.
- Do I need an appointment at Labcorp 427 W 20th St?
- Most Labcorp patient service centers take walk-ins, and Labcorp lets you book a time slot on its site, which shortens the wait at busy locations. Bring a photo ID and your requisition — through TestWell it arrives by email within minutes of the physician's authorization, and it is accepted here as written.
- Can I get blood work at this Labcorp location without a doctor?
- Yes, with a requisition: Labcorp draws what a requisition orders but does not write orders. Order on TestWell — a licensed physician in our network authorizes it as part of the price, with one $6 lab processing fee per order — choose Labcorp at checkout, and walk in here. No insurance, referral or office visit; HSA and FSA cards are accepted.
- How much does a blood test cost at Labcorp in Houston?
- Through TestWell the price is the test's listed price plus one $6 fee per order, with nothing to pay at the draw. For example, TSH + Free T4 is $39.99, Comprehensive Metabolic Panel is $22.99, Tuberculosis (TB) Blood Test is $91.99 drawn at Labcorp. Ordered through a doctor and billed to insurance, your share depends on your plan.
- What is the phone number for Labcorp 427 W 20th St, Houston?
- 713-869-7206. Phone and hours were read from the lab's listing on 2026-10-10.