Free T4
pmol/LThe unbound, available form of thyroxine — your thyroid's main circulating hormone.
Why it matters
Read with TSH, it separates a thyroid that is failing from a pituitary signalling problem.
22 биомаркери кои ја објаснуваат тврдоглавата тежина: тироидна жлезда, кортизол, естрадиол, HbA1c (инсулинска резистенција), функција на црн дроб и бубрези, и витамините што го регулираат метаболизмот.
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Што се мери
Every marker below is read against optimal ranges — not just the lab reference band — and explained by a clinician on your results call.
The unbound, available form of thyroxine — your thyroid's main circulating hormone.
Why it matters
Read with TSH, it separates a thyroid that is failing from a pituitary signalling problem.
The active thyroid hormone your cells actually use to set metabolic rate.
Why it matters
Explains why some people feel hypothyroid despite normal TSH — conversion from T4 to T3 can be impaired.
The pituitary's signal telling your thyroid how much hormone to produce.
Why it matters
The most sensitive early marker of thyroid trouble. TSH shifts before T4 and T3 do, and before most people notice symptoms.
A waste product from normal muscle activity, cleared by your kidneys.
Why it matters
The standard measure of kidney filtration, though it is also affected by muscle mass.
An estimate of how much blood your kidneys filter each minute.
Why it matters
The clearest single number for kidney function, and how kidney disease is staged.
A waste product from protein breakdown, cleared by the kidneys.
Why it matters
Rises with dehydration and high protein intake as well as kidney problems, so it is read alongside creatinine.
The protein fraction that includes your antibodies.
Why it matters
Raised levels can indicate chronic infection or inflammation; low levels suggest weakened immunity.
The main protein your liver makes, holding fluid inside your blood vessels.
Why it matters
A good measure of longer-term liver function and nutritional state.
All the protein circulating in your blood.
Why it matters
Read with albumin to separate liver problems from immune or kidney causes.
The yellow pigment produced as old red blood cells are broken down.
Why it matters
Mildly raised levels are often harmless Gilbert's syndrome; higher levels need investigating.
A liver enzyme released into the blood when liver cells are stressed or damaged.
Why it matters
The most specific routine marker of liver strain — commonly raised by fatty liver, alcohol or medication.
A liver enzyme particularly sensitive to alcohol and bile duct problems.
Why it matters
The most responsive marker to alcohol intake, and a useful check on liver recovery.
An enzyme from the liver, bile ducts and bone.
Why it matters
Raised levels point either to a bile-flow problem or to active bone turnover.
An enzyme found in the liver, heart and muscle.
Why it matters
Read against ALT, the ratio between them helps distinguish liver causes from muscle causes.
Your main stress hormone, following a daily rhythm.
Why it matters
Explains fatigue, weight change and poor sleep. Timing of the sample matters as much as the number.
The principal male sex hormone, also present and important in women.
Why it matters
Drives energy, muscle, mood and libido in both sexes. Low levels have measurable, treatable causes.
The main form of oestrogen, central to the menstrual cycle and bone health.
Why it matters
Interpreted against cycle timing in women; in men, raised levels can cause their own symptoms.
Your average blood sugar over the past two to three months, measured on your red blood cells.
Why it matters
Unlike a single glucose reading, this cannot be gamed by fasting. It is the standard for diagnosing and tracking diabetes.
Your body's iron store — the protein that holds iron until it is needed.
Why it matters
The first thing to fall when iron runs low, often long before haemoglobin drops. A common and very treatable cause of fatigue.
The total B12 in your blood, both active and bound forms.
Why it matters
A useful screen, though much of what it measures is bound and unavailable to your cells.
Vitamin B9, needed to build DNA and red blood cells.
Why it matters
Works together with B12 — treating one without checking the other can mask a serious deficiency.