BLOOD TESTS ∙ 2 minute read

Why do I need two blood tests to diagnose low testosterone

By Joe Young | Medically reviewed by Dr Luke Pratsides

When it comes to your health, it’s easy to brush things under the rug. But your testosterone levels deserve your attention. In order to diagnose testosterone deficiency, two blood tests are necessary. And you’re probably wondering why. 

Let’s find out. 

Why is testing for testosterone complicated?

Diagnosing testosterone deficiency isn't straightforward like checking your temperature. One blood test won't cut it. Research has shown that testosterone levels can fluctuate throughout the day and can be affected by various factors such as stress, sleep, and physical activity. They may even be influenced by the season. Two tests give a clearer picture and a better understanding of what's really going on inside your body - without the full picture we can’t prescribe the treatment you need. 

And it’s worth the extra effort. Research indicates that untreated low testosterone can lead to a decrease in muscle mass, an increase in body fat, and a decline in bone density. 

Don't wait until the engine breaks down to check the oil. Take preventive measures and invest in your long-term wellbeing. Two blood tests might seem like a small step, but they're a giant leap towards getting the treatment you need. 

What’s the process of testing for testosterone?

To break it down simply, follow these steps to diagnose low testosterone:

  • Capillary blood test (CBT): This is a simple finger-prick test that you can do at home. You should ensure you take the sample in the morning before 11 am, to ensure the most accurate result. Once posted to the lab, your blood will be analysed and you’ll see a clear breakdown of your results by logging into your account. The test can act as an early warning system by providing valuable insights into your hormonal balance without the hassle of going to a doctor. 
  • Venous blood test (VBT): If your CBT indicates low testosterone, you can book a VBT through your account. From there, you can book a visit from a nurse at a time and place that suits you. The sample should be taken at least 2 weeks after the CBT sample and in the morning before 11 am. This test can confirm your diagnosis and also analyses a wide array of biomarkers that will help a clinician determine the most safe and effective treatment for you. To get your results, you’ll need to book a free consultation with a clinician. They can clearly explain what each biomarker means and the best course of action for treatment. If you’ve had a test elsewhere that’s indicated low testosterone, you can book your second test with Numan by contacting [email protected]
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The numan take

Your health requires precision, not guesswork. Two tests can confirm a diagnosis, giving you a clearer understanding of your hormone levels. Low testosterone isn't something to shrug off. So take action and optimise your health.