acne blood test explained

Overview

A blood test for acne is a simple medical test that checks for underlying hormonal imbalances or other health issues that may be causing your acne. It helps your doctor find the right treatment for you.

Blood tests for acne are not routine. They are usually done when acne is severe, starts suddenly in adulthood, or is accompanied by other signs such as irregular periods or excess hair growth.

Blood tests for acne are most often recommended for women who have signs of hormonal imbalance, but they can be done for anyone with difficult-to-treat acne.

Symptoms

Common symptoms

• Persistent pimples, blackheads, or whiteheads
• Deep, painful cysts or nodules
• Acne that does not improve with over-the-counter treatments

Symptoms in children

• Acne that appears before age 8
• Severe acne in teenagers with a family history of acne

Symptoms in older adults

• New-onset acne after age 25
• Acne along with other signs like facial hair, thinning hair, or irregular periods

Causes

Main causes

• Hormonal imbalances, such as too much testosterone or other androgens
• Genetics – acne runs in families
• Clogged pores caused by excess oil, dead skin cells, and bacteria

Risk factors

• Family history of acne
• Hormonal changes during puberty, menstrual periods, or pregnancy
• High levels of stress
• Certain medications, such as corticosteroids or some seizure treatments

When to see a doctor

See a doctor urgently if:

• Acne that shows signs of infection (redness, swelling, warmth, pus, fever)
• Sudden onset of very severe acne with blisters or peeling skin

Book a routine appointment if:

• Acne that does not get better after several months of self-care
• Acne that causes scars or affects your mood
• Women with acne and irregular periods, excess hair, or hair thinning

Diagnosis

Your doctor will examine your skin and ask about your medical history, your menstrual cycle (if relevant), and any other symptoms. If they suspect a hormonal or other underlying cause, they may recommend a blood test.

Tests that may be done

• Hormone panel – checks levels of luteinizing hormone (LH), follicle-stimulating hormone (FSH), testosterone, and DHEA-S
• Androgen levels – to see if male hormones are too high
• Cortisol or adrenal function tests – if adrenal gland problems are suspected

What to expect at your appointment

The blood test is quick. A healthcare professional will take a small sample of blood from a vein in your arm. You may feel a brief sting. Results usually take a few days to a week. Your doctor will explain what they mean.

Treatment

Treatment for acne depends on what is causing it. If a blood test shows a hormonal imbalance, your doctor can suggest treatments to correct that balance. Even without a clear cause, many effective treatments are available to help clear your skin.

Self-care at home

• Wash your face gently twice a day with a mild cleanser
• Use non-comedogenic (won't clog pores) moisturizers and makeup
• Avoid picking or squeezing pimples – it can cause scars
• Try over-the-counter acne products containing ingredients like benzoyl peroxide or salicylic acid

Medical treatments

Your doctor may prescribe creams, gels, or lotions that contain retinoids, antibiotics, or other active ingredients. For hormonal acne, treatment options include oral contraceptives or other hormone-regulating medications. A dermatologist can help find the best plan for you. Do not use any prescription treatments without your doctor's guidance.

When is surgery considered?

Surgery is rarely used for acne. In some cases, a doctor may drain a very large cyst in their office, but this is not a common treatment.

Living with this condition

Living with acne can be frustrating, but many people see great improvement with consistent care. Blood tests can help guide treatment, so you have a better chance of finding what works for you.

Lifestyle tips

• Manage stress with relaxation techniques like deep breathing or meditation
• Get enough sleep each night (7–9 hours for most adults)
• Avoid heavy makeup or greasy hair products that can clog pores

Diet and exercise

A healthy diet and regular exercise are good for your overall health, but they do not directly cure acne. Some people notice that certain foods (like dairy or sugary snacks) worsen their acne. If you think a food trigger affects you, keep a food diary and talk to your doctor.

Mental health and emotional wellbeing

Acne can affect how you feel about yourself. If you feel anxious, embarrassed, or depressed, it is important to talk to your doctor. If you ever have thoughts of harming yourself, call emergency services or a crisis helpline right away. You are not alone.

Prevention

Acne cannot always be prevented, but a good skincare routine and avoiding known triggers can reduce breakouts. Blood tests can help identify underlying causes, which may allow you to prevent more severe acne.

Complications

If left untreated

• Permanent scars or dark spots on the skin
• Discoloration that may take months to fade
• Low self-esteem or depression

Long-term outlook

With proper treatment, most people see significant improvement. Even if a blood test reveals a hormonal issue, effective treatments exist. Acne often gets better with age. Your doctor can work with you to find the right approach. You have many reasons to be hopeful.

Find support

External links open third-party websites. Ruqelo Health is not responsible for external content. Listing an organisation does not imply endorsement.