BioLife Plasma Services San Marcos, CA

Donating at BioLife Plasma Services San Marcos, CA

BioLife Plasma Services San Marcos, CA is a BioLife Plasma donation center at 2085 Montiel Rd in San Marcos, CA. You can reach it on 442-286-3025. It opens seven days a week.

Who can donate here

BioLife Plasma asks that you are between 18 and 65. The weight range is 110–400 lb. Donors also need to live within 40 miles of the center. You will also need photo ID, proof of your Social Security number, and proof of your current address. A tattoo or piercing in the last 4 months means waiting before you can donate.

When it is open

This location opens 7 days a week. Across the week the doors are open from 6am at the earliest to 7:30pm at the latest. Check the table above for the exact day you plan to visit. BioLife Plasma takes bookings through its own account system, so set that up before your first visit.

Your first visit

Your first visit takes about 2 hours. It includes a health questionnaire and a physical screening. Later visits typically run about 90 minutes. BioLife Plasma pays onto a prepaid debit card, usually within a few hours of you finishing. It also runs a loyalty programme and a refer-a-friend bonus, which can lift what you earn beyond the base rate.

Before you go

Drink plenty of water and eat a full meal in the few hours beforehand. Low iron and dehydration are the two most common reasons people are turned away on the day. Avoid alcohol for 24 hours and fatty food on the day itself. Hours and requirements are set locally and do change, so it is worth a quick call before you travel.

Where this fits

See also all plasma centers in San Marcos, California directory and all BioLife Plasma locations.

Location details verified against PlasmaLedger's directory on 2026-09-01. Confirm hours with the center before travelling.