Plasma donation centers in San Marcos, TX
2 plasma donation centers in San Marcos, TX. Donors report pay from $675 to $675.
- Centers
- 2
- Operators
- 2
- Open 7 days
- 1
Map of centers in San Marcos
All 2 centers in San Marcos
Filter by company or sort any column. Pay figures are reported by donors, not quoted by the operator.
| Grifols Biomat USA San Marcos, TXGrifols | $675 | 7d |
|---|---|---|
| Spectrum Plasma San Marcos, TXSpectrum Plasma | — | 4d |
Addresses and hours
Each card shows whether the center is open right now, plus its address and phone number.
Looking wider? See every plasma donation center in Texas .
About plasma donation in this city
Plasma donation centers in San Marcos
There are 2 plasma donation centers listed in San Marcos, TX, run by 2 companies: Grifols and Spectrum Plasma.
Locations
- Grifols Biomat USA San Marcos, TX — 1400 I 35 Frontage Rd — new-donor bonus up to $675 reported
- Spectrum Plasma San Marcos, TX — 137 N Guadalupe St
Which companies operate in San Marcos
Grifols (1 location) and Spectrum Plasma (1 location). Each company sets its own pay, new-donor offer and booking system. The center does not. So it pays to compare both before your first visit.
Company pages: Grifols · Spectrum Plasma.
Reported donor pay in San Marcos
One San Marcos center has a reported new-donor bonus: $675. A new-donor bonus is a total paid across your first several donations. It is not a single payment. Amounts vary by location, donor status and weight bracket. Promotions change too. Treat these as reported figures, not a guaranteed rate.
Opening hours
1 of 2 centers with recorded hours open seven days a week. Check the individual center page for the day you plan to visit.
Nearby options in Texas
San Marcos is one of 79 cities in Texas with listed plasma centers, out of 183 centers statewide. Other cities with listed centers include Houston (16), San Antonio (15), El Paso (13), Dallas (10), Fort Worth (8) and Austin (6). See the full Texas directory.
First time donating in San Marcos? Check the eligibility requirements and what to expect before you go.
2 centers verified against PlasmaLedger's directory on 2026-09-01.