• Call: 01273-775-480



This test measures testosterone levels, the principal androgen (male hormone) in men, and can also allow for the detection of hormonal imbalances related to symptoms of male andropause, rapid ageing, low vitality and sexual dysfunction.

In men

With advancing age, testicular function often declines and levels of free, bioavailable testosterone plummet. By the time a man reaches age 50, his bioavailable levels of testosterone may be half their youthful levels. The primary cause of this decline appears to be chronic deteriora tion of Leydig cells in the testes, but the decrease is also influenced by altered hypothalamic-pituitary-gonadal axis activity and age-induced changes in concentrations of sex-hormone binding globulin (SHBG)

In women

Imbalanced testosterone levels in women are also associated with a number of health complaints, including low libido, acne, hirsuitism and polycystic ovarian syndrome.

Testosterone powerfully influences:

  • Emotional well-being
  • Cardiovascular health
  • Sexual function
  • Bone integrity
  • Muscle mass and strength
  • Cognitive ability

Because of testosterone’s synergistic impact on immune, metabolic and inflammatory functions in the body, imbalances in the hormone may be found in a diverse array of health disorders, ranging from:

  • Rheumatoid arthritis
  • Obesity
  • Heart disease
  • Osteoporosis
  • Insulin resistance

What is being measured

Saliva testosterone levels

Salivary testing of hormones, unlike serum testing, measures the free, unbound fraction of hormone that is available to exert its effect on the target tissue. This test can be used to assess baseline levels and monitor testosterone replacement therapy.

Age range this test is suitable for

Adults. Younger adults must have gone through puberty.

Specimen requirements

1 saliva sample (2ml) collected at 12 noon

You will need to send your sample back to the lab via a next day postal service – If you are in the UK, Royal mail offer a suitable next day service. If you are outside of the UK then please check with your postal service for options. The cost of the test does not cover the return postage.
Please note that samples should only be posted on Monday – Thursday so that they do not arrive over the weekend when the lab is closed.
A courier returns option is offered by the lab and details will be included in with your test kit. This is an optional service and the cost is not included in with the test fee. Details about payment, should you wish to take up this offer, are included with the courier details.

Before taking this test

  • Avoid caffeine, alcohol, and nicotine on day of test
  • Do not eat, brush or floss teeth, use mouthwash, or chew gum (1 hour before)
  • Wash hands before collection
  • See instructions inside test kit for details

Turnaround Time

14 Days


All sample reports are for representational and educational purposes only. Biomarkers, references ranges, results, and all other data may differ from actual reports. All data included in no way represents an actual patient. Any comparisons of results to actual patients, is completely incidental.

Smart Nutrition Testosterone Sample Report