Do they test for STD when donating blood?

Asked by: Keagan Ziemann  |  Last update: November 19, 2025
Score: 4.9/5 (63 votes)

All donated blood, even donations from repeat donors, is tested for blood type, hepatitis, HIV, syphilis, and other transmissible diseases. Blood may also be separated into various components (such as red cells, platelets, or plasma) so each donation may help several people.

Can donating blood tell you if you have an STD?

To protect patients, your blood is tested for hepatitis B and C, HIV, syphilis, and other infections. If your blood tests positive, it will not be given to a patient. You will be notified about any positive test result which may affect when you are eligible to donate in the future.

What disease do they test for when you donate blood?

Laboratory testing of donated blood — After a unit of blood has been donated, the blood is tested in a laboratory for infectious diseases that can be transmitted by blood transfusion. These include tests for HIV, hepatitis B virus, hepatitis C virus, human T-lymphotropic virus (HTLV), West Nile virus, and syphilis.

Do blood donation centers check for STDs?

In fact, blood and plasma can carry diseases. That is why donors and plasma are screened for a variety of diseases such as STDs, and donation centers follow strict safety protocols to ensure a safe donation and transfusion.

Do doctors test for STDs when they take blood?

STD testing can be performed through bloodwork but is not typically included in a standard blood panel. If you want your doctor to test you, you'll need to have an open and honest conversation with them about your concerns. This includes telling them about your symptoms so they can issue the right tests for you.

World Blood Donor Day - What are the tests carried out on the donated blood?

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Do normal blood tests show STDs in the UK?

Routine blood tests typically do not include STD testing due to the complexity of identifying infections and the specialised procedures involved. To monitor your sexual health, consult your healthcare provider about adding an STD panel to your routine blood tests.

Can chlamydia be detected in blood?

Chlamydia is not tested for with a blood test. It is a bacterial infection – which means it is living somewhere in your body and can be treated with antibiotics, but is unlikely to show up in a blood test. Chlamydia can be tested for in urine or with a swab or the site where the infection might be.

Do they test for STD when donating blood in the UK?

We always need to determine your blood group, screen for any antibodies in your plasma and test your donation for syphilis, hepatitis B, C and E, HIV and HTLV. We may also check for malaria, T-cruzi, West Nile Virus and Cytomegalovirus.

What are the signs of chlamydia in a woman?

What are signs of chlamydia in women?
  • Increased or unusual vaginal discharge.
  • Burning with urination.
  • Pain in the back or abdomen.
  • Nausea.
  • Fever.
  • Discomfort during sex.
  • Bleeding between periods.
  • Rectal pain, bleeding, or discharge.

Is donated blood always tested?

Yes. Every donated unit of blood, platelets and plasma undergoes rigorous testing for a number of infectious diseases, including HIV, hepatitis and more. If a unit of blood passes these tests, it is considered safe for patients.

Do they test for STD when donating plasma?

Yes. Every donor must be screened for HIV, Hepatitis B and Hepatitis C at each donation using nucleic amplified testing (NAT). This state-of-the-art method tests for DNA particles of viruses.

Who cannot donate blood in the UK?

You can't donate blood if you:
  • have had most types of cancer.
  • have some heart conditions.
  • have received blood, platelets, plasma or any other blood products after 1 January 1980.
  • have tested positive for HIV.
  • have had an organ transplant.
  • are a hepatitis B carrier.
  • are a hepatitis C carrier.

What diseases are screened for in donors blood?

WHO recommends that all blood donations should be screened for infections prior to use. Screening for HIV, hepatitis B, hepatitis C, and syphilis should be mandatory. Blood screening should be performed according to quality system requirements.

Can STD get in your blood?

Some STDs, such as hepatitis B and HIV, are also transmitted through blood-to-blood contact, through sharing syringes or equipment to inject drugs, body piercing equipment or tattooing needles. Pregnant people with STDs may pass their infections to infants during pregnancy, birth, or through breast feeding.

Does oneblood test for STDs?

The test tubes the phlebotomist drew at the beginning of the donation process must be tested for a battery of tests including HIV 1 & 2, West Nile Virus, Hepatitis C, Hepatitis B, T-cruzi or Chagas, Syphilis and Human T-Cell Lymphotropic Virus 1 & 2. Each unit of blood is also tested for cholesterol levels.

Why would blood donation be rejected?

Activities include: Nonprescription injection drug use. Engagement in sex for money or drugs. New sexual partner or more than one sexual partner in the last 3 months and engaged in anal sex in the last 3 months.

What does chlamydia pee feel like?

Symptoms in men include: Painful urination or an itchy feeling with urination (often the first symptom). Cloudy urine.

Which STDs are not curable?

Viruses such as HIV, genital herpes, human papillomavirus, hepatitis, and cytomegalovirus cause STDs/STIs that cannot be cured. People with an STI caused by a virus will be infected for life and will always be at risk of infecting their sexual partners.

Do STDs show up when you donate blood?

All donors are tested for infections that can be passed on by blood transfusions. Recent infection may not always show up on testing in the early stages – i.e. in the 'window period. ' This is why we must take great care in donor selection and why you must not give blood to see if you are infected.

What do they check before donating blood?

Prior to donating blood, all donors will receive a free health screening. At the time of your donation, your blood pressure, hemoglobin, and pulse will be checked. We record these vitals in your online donor profile where you can track and monitor your results.

Does getting blood drawn show STDs?

In conclusion, while normal blood tests can detect some STDs like HIV and syphilis, they are not the primary method for diagnosing most infections. STD testing typically involves a combination of physical exams, urine tests, swab tests, and sometimes, blood tests.

What STDs cannot be tested for?

​​​What can't I test for?
  • Genital Herpes.
  • Human Papillomavirus (HPV), including genital warts.
  • Hepatitis A.
  • Hepatitis B.
  • Trichomoniasis.
  • Yeast Infection.
  • Bacterial Vaginosis.

How did I get chlamydia if my partner is clean?

Here are the ways in which Chlamydia is transmitted:

Unprotected vaginal, anal or oral sex. Sharing sex toys that are not properly washed in between uses, or covered with a new condom. Your genitals come into contact with your partner's genitals. Chlamydia is transmitted through the touching of genitals.

Can a bottom give a top chlamydia?

Anyone who has sex can get chlamydia through unprotected vaginal, anal, or oral sex.