HealthTap Online Primary Care Doctors Accepting New Patients
Book a video visit
HealthTap
Telehealth
A member asked:

Is it possible to give half a pint of blood at one time?

A doctor has provided 1 answer
Dr. Payam Mehranpour answered

Specializes in Internal Medicine - Cardiology

Yes, for most: The typical blood donation is about 450ml which is close to one liter. There are certain criteria to meet to be eligible for blood donation. You can visit the red cross website for more information. http://www.redcrossblood.org/donating-blood.

Dr Parvez agreed

Answered 9/7/2013

4.9k views

Thank

Related Questions

A member asked:

When I take my tampon out there is only blood on one side. It's been like this for a long time. Is it normal?

A doctor has provided 1 answer

A member asked:

What blood tests are extremely important to check health and disease markers? If your ill all the time what could one do to help themselves?

A doctor has provided 1 answer

A member asked:

I had heavy blood one time during the day and then it went away next day same thing happend except not heavy and today i had nothing, could i be prgnt?

A doctor has provided 1 answer

A member asked:

I'm only 16 and it's been 2 days since my last erection nothing seems to give me one or even do anything to me at all it doesn't even move its limp and cold and feels like there is absolutely no blood in it and it's shriveled up i'm so scared please help

3 doctors weighed in across 2 answers

A member asked:

Can blood and mucus be a one time event in stools?

A doctor has provided 1 answer

Sponsored Content
HealthTap Medical Group does not endorse products or services. Sponsored content revenues support our mission to make health information free and accessible to all.Learn more

People also searched for:

In my left arm where I usually I get blood tests I feel this sharp pain like someone keeps giving me blood tests, last time I had one was 6months ago?
Normally no prob with giving blood. One time about 45 min later got light headed and dizzy. I had the juice and cookies offered after. Connected?
Some one said it's not good to donate or give blood for test in the night. Is this correct?
Can you let me know how many times in a month can you give blood, and how often if more that a few a month?
How much time to recover from giving blood?

Telemedicine

Primary Care
Manage Your Conditions
Women's Health
Children's Health
Men's Health
Senior Health
Wellness, Prevention & Lifestyle
Sexual Health
Mental & Behavioral Health
Travel Medicine
Urgent Care
Ask your question
Didn't find what you're looking for?

90,000 U.S. doctors in 147 specialties are here to answer your questions or offer you advice, prescriptions, and more.

Ask your question

More of what we treat

Allergies
Antibiotics
Asthma
High Blood Pressure
Prescriptions
Type 2 Diabetes
Content on HealthTap (including answers) should not be used for medical advice, diagnosis, or treatment, and interactions on HealthTap do not create a doctor-patient relationship. Never disregard or delay professional medical advice in person because of anything on HealthTap. Call your doctor or 911 if you think you may have a medical emergency.
HealthTap
HIPAA logo
HIPAASecure
Soc 2 Type 2 logo
SOC 2 Type 2Certified
JCAHO Accredited
JCAHOAccredited
Member App

Download HealthTap

Video visit and message your doctor

Member App QR Code
Play Store Member LinkApp Store Member Link

Questions?

+1 (888) 828-0841support@healthtap.com
LinkedInTwitter
HomeTermsPrivacyCookiesDMCAHealth TopicsDoctors DirectoryDoctor Q&A by Specialty
Copyright 2026 HealthTap, Inc.