For regular blood donation I don't think so but you may wait longer than if you have an appointment. For double red or platelets you definitely should get an appointment.
Thank you for your question! Appointments are encouraged but walk-ins are welcome. You can make an appointment online (bit.ly/Zipcode_CBC) or call/text us at 800-366-2834.
The flower mound center is pretty busy and I suggest you schedule an appt.
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