Verified center record
1400 IH 35 South, San Marcos, TX 78666
Official hours checked Sep 28, 2026
Location permission has not been given.
Official location details
| Monday | 8:00 AM to 6:00 PM |
|---|---|
| Tuesday | 8:00 AM to 6:00 PM |
| Wednesday | 7:00 AM to 6:00 PM |
| Thursday | 7:00 AM to 6:00 PM |
| Friday | 7:00 AM to 6:00 PM |
| Saturday | 7:00 AM to 2:00 PM |
| Sunday | 7:00 AM to 2:00 PM |
Time-sensitive information
The official center page published this new-donor offer when it was checked on September 28, 2026:
Earn up to $720 in your first month! Receive special compensation for your first 8 donations completed within 30 days*
Offers change and carry the operator's own terms. Confirm the current offer on the official page before you donate.
Requirements vary by center. Review the official center page before traveling. Contact the center directly if you need to confirm documents, appointment availability, eligibility or a current promotion.
General preparation guidance is published by the U.S. Department of Health and Human Services: HHS guidance about giving plasma.
Each fact on this page comes from one of these sources, checked on the date shown.
Official Grifols center page checked for address, phone number and weekly hours and the published new-donor offer.
FDA active plasmapheresis-center record matched to this center by operator and ZIP code (facility 57586).