Testosterone blood test
Informed by recognized medical guidance
Overview
A testosterone blood test measures the level of the hormone testosterone in your blood. Testosterone is a key male sex hormone that affects muscle mass, bone density, sex drive, and red blood cell production. The test helps check for low or high testosterone levels, which can cause various symptoms.
Key facts
- Testosterone levels naturally fall with age, usually after age 30.
- The test is often done in the morning when levels are highest.
- Results alone don't diagnose a condition – your doctor will look at symptoms and other factors.
Yes, testosterone blood tests are common, especially for men with symptoms of low testosterone, infertility, or certain pituitary gland problems. Women may also have this test for conditions like polycystic ovary syndrome (PCOS).
The test is most often done in adult men, but can be given to women and children if a hormone problem is suspected.
Symptoms
- Sudden severe pain in the testicles
- Sudden inability to urinate or blood in urine
- Signs of a stroke (face drooping, arm weakness, speech slurred)
- ⚠New or worsening depression with thoughts of self-harm
- ⚠Testicular swelling or pain that doesn't improve
- ⚠Severe headache or vision changes
Common symptoms
- Low sex drive (low libido)
- Erectile dysfunction (trouble getting or keeping an erection)
- Loss of muscle mass or strength
- Feeling very tired (fatigue)
- Depression or irritability
- Loss of body hair or reduced beard growth
- Hot flushes or sweats
Symptoms in children
- Delayed or slow puberty (not developing body hair, voice change, or growth in testes)
- Slow growth in height
Symptoms in older adults
- Falls or fractures due to weaker bones (osteoporosis)
- Loss of energy and motivation
- Increased body fat and decreased muscle
Causes
Main causes
- Natural aging – testosterone drops slowly after age 30.
- Injury or infection to the testicles (e.g., mumps, trauma)
- Pituitary gland problems (small gland in the brain that controls hormone production)
- Chronic illnesses like diabetes, kidney disease, or obesity
- Medicines such as opioids or steroids (but we do not name specific drugs)
Risk factors
- Being over 40
- Having untreated diabetes or obesity
- Heavy alcohol use or drug misuse
- Smoking
- High stress levels
When to see a doctor
See a doctor urgently if:
- Severe testicular pain or swelling
- Sudden vision loss or severe headache
Book a routine appointment if:
- You have ongoing symptoms of low testosterone for weeks or months
- You have fertility problems (trouble getting a partner pregnant)
- You are over 40 and concerned about aging changes
Diagnosis
Your doctor will talk about your symptoms, medical history, and then order a testosterone blood test. The test is usually done early in the morning, because levels are highest then. You may need to repeat the test to confirm results.
Tests that may be done
- Total testosterone blood test (measures all testosterone bound and free)
- Free testosterone blood test (measures the active form)
- LH and FSH blood tests (to check pituitary control)
- Prolactin blood test (to rule out a tumor)
What to expect at your appointment
A blood sample is taken from a vein in your arm. It's a quick prick and may give a small bruise. You don't usually need to fast, but follow your doctor's advice. Results can take a day or more.
Treatment
Treatment depends on whether your testosterone is low and if you have symptoms. Not everyone with low levels needs treatment. If your levels are normal, no treatment is needed. For true low testosterone, your doctor may suggest lifestyle changes or hormone therapy.
Self-care at home
- Get regular exercise, especially weight training and walking
- Maintain a healthy weight – excess fat can lower testosterone
- Sleep 7–8 hours a night – lack of sleep can lower levels
- Reduce stress through relaxation or hobbies
- Limit alcohol and avoid smoking
Medical treatments
If symptoms are bothersome and blood tests confirm low levels, your doctor may offer testosterone replacement therapy. This can come as gels, patches, injections, or pellets inserted under the skin. The goal is to bring your levels into a healthy range. Your doctor will monitor your blood and check for side effects. Never use unregulated supplements or online hormone products.
When is surgery considered?
Surgery is rarely needed for low testosterone itself. However, if a pituitary tumor or testicular tumor is found, surgery may be part of treatment. This would be discussed with a specialist.
Living with this condition
Most men with low testosterone can manage symptoms with lifestyle changes and, if needed, medical treatment. It's important to track your mood, energy, and sex drive so you can share updates with your doctor. Regular check-ups help keep your levels in balance.
Lifestyle tips
- Keep a routine with regular exercise
- Get enough sleep – aim for 7–8 hours
- Join a support group or online community
- Talk openly with your partner or family about how you're feeling
Diet and exercise
Eating a balanced diet with enough protein, healthy fats, and vegetables supports hormone health. Exercise that works large muscle groups – like squats, lunges, or push-ups – can boost testosterone naturally. Avoid fad diets.
Mental health and emotional wellbeing
Low testosterone can cause depression, anxiety, and low self-esteem. It's normal to feel frustrated. If you have thoughts of harming yourself, call your local emergency number or a crisis helpline right away. Counselling can help you cope.
Prevention
You can't prevent the natural decline in testosterone with age. But you can protect your levels by staying at a healthy weight, exercising, sleeping well, and avoiding excessive alcohol or drugs. There are no vaccines or supplements proven to prevent low testosterone.
Vaccines
Not applicable. There is no vaccine for low testosterone.
Screening programmes
Routine screening is not recommended for all men. Your doctor may suggest a test if you have symptoms or conditions that raise your risk (like diabetes or pituitary issues).
Complications
If left untreated
- Osteoporosis (weak, brittle bones that break easily)
- Loss of muscle mass and strength
- Lower quality of life due to low energy and mood changes
- Increased risk of diabetes and heart disease
Long-term outlook
For most people, low testosterone can be managed effectively. With lifestyle changes or medical treatment, symptoms often improve. Regular follow-up with your doctor helps keep you healthy. Many men go on to live full, active lives.
Find support
International organisations
- International Society for Sexual Medicine
- Andrology Australia
Local organisations
- NHS (UK) – Testosterone Test Information · UK
- Healthline – Low Testosterone Guide · USA
Helplines
External links open third-party websites. Ruqelo Health is not responsible for external content. Listing an organisation does not imply endorsement.
Always verify with your doctor
Health guidelines vary by country and region. The information in this article is based on international clinical guidelines but may not reflect the specific guidelines, medications, or practices in your country. Always discuss your health concerns with your own doctor or healthcare provider, and refer to your local national health guidelines where available.
Important notice This information is for educational purposes only. It does not replace professional medical advice, diagnosis, or treatment. Always consult a qualified healthcare provider about your specific situation. If you are experiencing a medical emergency, call your local emergency services immediately.
Related conditions
Sources and guidance
This article is educational and is prepared with reference to recognized health information and clinical guidance sources where available. Specific source links may vary by topic.
Last updated: July 16, 2026
Educational note: This information is for education only and is not a diagnosis.
Use it to support, not replace, advice from a licensed clinician.
If symptoms are severe, worsening, or urgent, call your local emergency number or seek emergency care.
Guidance may differ by country or region. Confirm local recommendations with a qualified healthcare provider.