What Total Testosterone tells you
Hormones are chemical messengers involved in energy, mood, body composition, and reproductive health. This group covers the key hormones a clinician may review when looking at these areas.
Which Honed panels include Total Testosterone
Total Testosterone is measured in the Performance Panel and Hormone Panel. Every sample is collected at a pathology collection centre and processed at a NATA-accredited laboratory against RCPA reference ranges, with personalised plain-English commentary in your secure online report.
Why Total Testosterone matters
Testosterone is a steroid hormone synthesized primarily in the testes (men) and ovaries (women), with smaller amounts from the adrenal glands in both sexes. It is a key regulator of muscle mass, bone density, libido, mood, and red blood cell production. In men, testosterone declines gradually with age; in women, levels are much lower but remain physiologically important. Clinicians review testosterone alongside SHBG and free testosterone to understand the complete hormonal picture.
The range explained
Low levels
Low levels (below 8 nmol/L in men) may relate to reduced muscle mass, fatigue, or mood changes. In women, consistently low levels may warrant investigation. Causes can range from lifestyle factors to medical conditions, and a clinician will interpret this in context.
Normal range
Reference ranges vary by sex and age: typically 8–30 nmol/L in adult men and 0.5–3 nmol/L in women. These ranges reflect physiological differences in testosterone production and function.
High levels
Elevated levels (above 30 nmol/L in men) can occur with certain medical conditions or exogenous hormone use. A clinician will interpret results in context of overall health and other markers.
What affects Total Testosterone
- Training: Resistance training stimulates testosterone production, particularly in response to compound lifts involving large muscle groups. Endurance exercise can suppress testosterone if prolonged or not balanced with recovery.
- Nutrition: Adequate protein intake, cholesterol from dietary sources, and zinc support testosterone production. Extreme caloric restriction or deficiency in micronutrients can lower levels.
- Sleep: Sleep is crucial for testosterone synthesis; poor sleep quality or insufficient duration (less than 7 hours) can reduce levels. Testosterone typically peaks in the early morning.
- Stress: Chronic psychological stress elevates cortisol, which suppresses testosterone. Managing stress through recovery practices supports hormonal balance.
When to retest
Every 8–12 weeks for athletes tracking performance; every 12 months for general health. Morning testing (8–9 am) is preferred due to natural daily fluctuations.
Why athletes care
Athletes monitor testosterone because it directly influences muscle protein synthesis, recovery, and power output. Higher testosterone is associated with greater muscle-building potential and performance in strength and power sports.
Related hormones markers
FAQ
What does the Total Testosterone blood test measure?
A key sex hormone involved in muscle, libido, mood, and body composition, present in both men and women. It is one of the most commonly requested hormone markers and is interpreted in context by a clinician.
Which Honed Health panels include Total Testosterone?
Total Testosterone is included in the Performance and Hormone panels.
What unit is Total Testosterone measured in?
Total Testosterone is reported in nmol/L, measured at NATA-accredited laboratories against RCPA reference ranges, with personalised plain-English commentary in your secure report.