White Blood Cell Count (WBC)
10⁹/LThe total number of immune cells circulating in your blood.
Why it matters
Rises with infection and inflammation, falls with some medications and viral illness — a broad first look at immune health.
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What's measured
26 biomarkers in this test
Every marker below is read against optimal ranges — not just the lab reference band — and explained by a clinician on your results call.
Full Blood Count
15 markersRed Blood Cell Count (RBC)
10¹²/LHow many red blood cells you have carrying oxygen around your body.
Why it matters
Low counts mean less oxygen reaching your tissues, which is felt as breathlessness and fatigue.
Haemoglobin (HGB)
g/LThe iron-containing protein in red cells that actually carries oxygen.
Why it matters
The defining measure of anaemia, and one of the most common explanations for unexplained tiredness.
Haematocrit (HCT)
%The proportion of your blood made up of red cells, by volume.
Why it matters
Read with haemoglobin to distinguish true anaemia from simple dehydration.
Mean Corpuscular Volume (MCV)
fLThe average size of your red blood cells.
Why it matters
Small cells point to iron deficiency; large cells point to B12 or folate. It tells us where to look next.
Mean Corpuscular Haemoglobin (MCH)
pgThe average amount of haemoglobin inside each red cell.
Why it matters
Supports MCV in separating the different causes of anaemia.
Mean Corpuscular Haemoglobin Concentration (MCHC)
g/LHow concentrated the haemoglobin is within each red cell.
Why it matters
Helps identify specific red-cell disorders that the other indices can miss.
Red Cell Distribution Width (RDW)
%How much your red blood cells vary in size.
Why it matters
Often the earliest abnormal marker in developing iron deficiency, before any other value shifts.
Platelets (PLT)
10⁹/LThe cell fragments that let your blood clot.
Why it matters
Too few risks bleeding, too many risks clotting — and either can flag a problem in the bone marrow.
Mean Platelet Volume (MPV)
fLThe average size of your platelets.
Why it matters
Larger platelets are younger and more active, giving a clue about how fast they are being produced.
Lymphocytes (LYM)
10⁹/LThe immune cells that handle viruses and long-term immunity.
Why it matters
Typically raised in viral infection and suppressed by chronic stress.
Monocytes (MON)
10⁹/LImmune cells that clear debris and support longer-running immune responses.
Why it matters
Persistently raised counts can point to chronic inflammation.
Neutrophils (NEU)
10⁹/LThe immune cells that respond first to bacterial infection.
Why it matters
High counts suggest bacterial infection or stress; very low counts leave you vulnerable to infection.
Eosinophils (EOS)
10⁹/LImmune cells involved in allergy and parasitic infection.
Why it matters
A raised count often points to underlying allergy, asthma or eczema.
Basophils (BAS)
10⁹/LThe rarest white cells, involved in allergic and inflammatory responses.
Why it matters
Rarely abnormal alone, but useful as part of the full immune picture.
Thyroid Function
3 markersFree 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.
Free T3
pmol/LThe 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.
Thyroid Stimulating Hormone (TSH)
mIU/LThe 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.
Hormones
4 markersProlactin
mIU/LThe pituitary hormone best known for milk production.
Why it matters
Raised levels disrupt periods, fertility and libido in both sexes, and are usually correctable.
Sex Hormone Binding Globulin (SHBG)
nmol/LThe protein that binds sex hormones and controls how much is free.
Why it matters
Explains a normal total testosterone with low free testosterone, and shifts with insulin resistance and thyroid function.
Testosterone
nmol/LThe 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.
Free Androgen Index (FAI)
ratioThe ratio of total testosterone to SHBG, estimating active androgen.
Why it matters
A key calculation in assessing PCOS and androgen excess in women.
Micronutrients
3 markersVitamin B12
pmol/LA vitamin essential for nerve function and red blood cell production.
Why it matters
Deficiency causes fatigue, pins and needles and memory problems, and can become irreversible if left too long.
Vitamin D
nmol/LThe vitamin your skin makes from sunlight, essential for bone, muscle and immune function.
Why it matters
Deficiency is near-universal in northern Europe through winter, and among the easiest deficiencies to correct.
Ferritin
µg/LYour 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.
Inflammation
1 markerC-Reactive Protein (CRP)
mg/LA protein your liver releases in response to inflammation anywhere in the body.
Why it matters
Sensitive but non-specific: it confirms inflammation is present without saying where. Persistently mild elevation is linked to cardiovascular risk.
