Quest Diagnostics - Seguin
Blood draws in Seguin. Instalab handles your order, results delivery, and physician review; pick your appointment time at checkout.

Available services
Below are popular panels at this location, and 600+ other tests are available under Build your own panel. Physician order and results are included. This facility charges $12 per blood draw, which is added at checkout.
The broadest starting point, covering 60+ biomarkers in a single blood draw.
$299ApoB, Lp(a), cholesterol, inflammation and glucose markers that drive heart risk.
$99Total and free testosterone with SHBG, LH and FSH for the full hormone picture.
$53Build your own panel
Pick exactly the biomarkers you want from Instalab's full test menu, then your appointment time at checkout.
Already have a lab order?
If a doctor or another service gave you a lab order, pick your appointment time at this location and bring the order with you.
- Book onlinePick your time at checkout.
- No doctor's order neededWe provide the physician order.
- Upfront pricingSee your total before you pay.
- Results and an action planPhysician-reviewed, sent to you.
Common questions
Contact
- 519 N King St, Suite 102, Seguin, TX 78155-4866
- 830-379-1777
- Fax 830-379-1788
- Mon6:00 am to 12:00 pm1:00 pm to 4:00 pmTue6:00 am to 12:00 pm1:00 pm to 4:00 pmWed6:00 am to 12:00 pm1:00 pm to 4:00 pmThu6:00 am to 12:00 pm1:00 pm to 4:00 pmFri6:00 am to 12:00 pm1:00 pm to 4:00 pmSatClosedSunClosed
- Get directions
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