Patient guides · Library

Biomarker library

A plain-English explanation of every blood test marker we measure, with UK reference ranges, symptoms of high and low, and which WMG Health panel includes it. Reviewed by our clinical team and updated when guidance changes.

12 markers

7 categories

UK reference ranges

05/30 last reviewed

Fe Iron Vit Vitamins Thy Thyroid And Androgens Oes Oestrogens Met Metabolic Inf Inflammation

Fe 1

Iron and haematology

Iron status, oxygen-carrying capacity, and the markers behind energy and hair growth.

FER

Ferritin

Ferritin is the main protein that stores iron inside cells. A blood ferritin level is the most useful singl...

ng/mL

Vit 2

Vitamins and nutrition

Vitamin and nutrient status. Vitamin D, B12 and related markers.

25-OH Vitamin D

Vitamin D

a.k.a. 25-hydroxyvitamin D

Vitamin D is a fat-soluble vitamin made in skin from sunlight and obtained in smaller amounts from food. Th...

nmol/L

B12

Vitamin B12

a.k.a. Cobalamin

Vitamin B12 is an essential nutrient for red blood cell formation, neurological function and DNA synthesis....

ng/L

Thy 3

Thyroid

TSH, free T4 and free T3 — the markers that decide how active your thyroid is.

TSH

Thyroid-Stimulating Hormone

a.k.a. Thyrotropin

TSH is a pituitary hormone that signals the thyroid gland to produce more thyroid hormone. It is the most s...

mIU/L

Free T4

Free Thyroxine

a.k.a. fT4

Free T4 is the unbound, biologically active form of thyroxine, the main hormone produced by the thyroid gla...

pmol/L

Free T3

Free Triiodothyronine

a.k.a. fT3

Free T3 is the unbound, biologically active form of triiodothyronine, the more potent of the two main thyro...

pmol/L

And 3

Androgens

Total and free testosterone, DHT and SHBG. The markers that drive male symptoms and pattern hair loss.

TOT

Total Testosterone

Total testosterone measures the total amount of testosterone in the blood, including both protein-bound and...

nmol/L

FRE

Free Testosterone

Free testosterone is the small, biologically active fraction of testosterone that is not bound to plasma pr...

nmol/L

DHT

Dihydrotestosterone

DHT (dihydrotestosterone) is a more potent androgen produced from testosterone by the enzyme 5-alpha reduct...

nmol/L

Oes 1

Oestrogens

Oestradiol and related markers, important in perimenopause, fertility and certain hair concerns.

Oestradiol

a.k.a. Estradiol

Oestradiol (E2) is the principal oestrogen of the reproductive years. It varies through the menstrual cycle...

pmol/L

Met 1

Metabolic

HbA1c, cholesterol and related markers used for diabetes screening and cardiovascular risk.

HbA1c

Glycated Haemoglobin

a.k.a. Glycohaemoglobin

HbA1c is haemoglobin that has reacted with glucose in the bloodstream. The blood test reflects the average ...

mmol/mol

Inf 1

Inflammation

CRP, ESR and related markers used to investigate persistent symptoms and post-illness recovery.

CRP

C-Reactive Protein

CRP is a protein made by the liver that rises within hours of an inflammatory stimulus. It is the most wide...

mg/L

Don't see what you need?

Build a custom panel

Our menu covers more markers than the standard panels. Build a custom panel with whatever combination you and your clinician think is most useful.

Build a custom panel Speak to the team