Testosterone – Key Markers LIS Code: TC100
“Discover how our Testosterone Key Markers blood test helps assess hormone balance, fertility and wellness. Book with Vitalync Diagnosis for a comprehensive profile and actionable insights.”
What's included in this profile
- An enzyme found mainly in the liver
- Raised levels can indicate liver inflammation or damage
- Commonly checked alongside AST to assess liver health
- An enzyme found in the liver, heart and muscles
- Raised levels can suggest liver or muscle damage
- Used alongside ALT to help pinpoint the cause of liver stress
- The main form of oestrogen in women of reproductive age
- Used to assess ovarian function, fertility and menopause status
- Also present at lower levels in men
- A pituitary hormone that regulates egg/sperm production
- Used to assess fertility and menopause status in women
- Also checked in men to help assess sperm production
- The small, biologically active portion of total testosterone
- Not bound to proteins, so freely available to tissues
- Gives a more precise picture than total testosterone alone
- The active, unbound form of the main thyroid hormone T4
- Checked alongside TSH to assess thyroid function
- Helps confirm an over or underactive thyroid
- Measures red cells, white cells and platelets
- A foundational test for overall health, anaemia and infection
- The 'Differential' breaks white cells down by specific type
- The main sugar circulating in the blood, used for energy
- Raised fasting levels can indicate prediabetes or diabetes
- A cornerstone test for metabolic health
- Reflects average blood sugar levels over the past 23 months
- The main test used to diagnose and monitor diabetes
- Not affected by what you ate that day, unlike glucose
- A pituitary hormone that triggers ovulation in women
- Also plays a role in testosterone production in men
- Checked alongside FSH for fertility and hormonal assessment
- A pituitary hormone best known for its role in breastfeeding
- Raised levels outside pregnancy can disrupt periods and fertility
- Checked when investigating irregular cycles or low libido
- A protein that binds testosterone and oestrogen in the blood
- Affects how much hormone is 'free' and active
- Needed to accurately interpret total testosterone results
- The primary male sex hormone, also present in women
- Affects energy, muscle mass, libido and mood
- Low levels in men can cause fatigue and reduced sex drive
- The pituitary hormone that signals the thyroid to produce T3/T4
- The primary firstline test for thyroid function
- Raised or low levels suggest an underactive or overactive thyroid
- The overall amount of cholesterol in the blood
- A key marker for cardiovascular risk
- Interpreted alongside HDL, LDL and triglycerides
- Essential for bone health, calcium absorption and immunity
- Deficiency is common, especially in winter months
- One of the most frequently tested vitamins in the UK
About this profile
The TC100 Panel is a testosterone and performance blood test designed for athletes, bodybuilders, and anyone training seriously for strength, endurance, or physique. Rather than checking testosterone in isolation, it looks at the full hormonal and metabolic picture that determines how well your body builds muscle, recovers, and performs — making it one of the more complete sports performance blood tests available without a referral.
The panel covers total and free testosterone alongside SHBG, since SHBG determines how much testosterone is actually available for your body to use. LH and FSH are included to check whether low testosterone is originating in the testes or further up the hormonal signalling chain, and oestradiol is measured because testosterone naturally converts to oestrogen, with imbalances here affecting both performance and recovery. Prolactin is checked as part of overall endocrine balance, since elevated levels can suppress testosterone production.
Beyond hormones, the panel checks a full blood count for oxygen delivery and recovery status, glucose and HbA1c for blood sugar control, a cholesterol panel for cardiovascular health, liver enzymes (AST and ALT) to catch strain from intense training or supplement use, thyroid function (TSH and Free T4) since it drives metabolism and fat-burning, and Vitamin D for bone health, muscle function, and immune resilience.
This test is worth considering if you're training at a high intensity and want to rule out hormonal or metabolic causes behind a performance plateau, if you're monitoring testosterone as part of a structured training or nutrition programme, or if you simply want a baseline before making changes to training load or supplementation.
