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BIOMARKER LIBRARY

Understand the markers that matter

Each OptiBlood test measures specific biomarkers — measurable indicators of your body's health. This library explains what each marker is and why it matters, so you can make informed decisions about your testing.

Biomarker information is educational and is not a substitute for medical advice. Always discuss your results with an appropriate healthcare professional.

C-Reactive Protein, CRP

C-Reactive Protein (CRP)

A general inflammation marker that may help investigate a range of conditions.

Who it's for: Adults wanting a general check on inflammation levels.

Uric Acid

Uric Acid

Measures uric acid levels, associated with joint and metabolic health.

Who it's for: Adults wanting information about uric acid levels.

High-Sensitivity CRP

High-Sensitivity CRP (hs-CRP)

A sensitive inflammation marker often used to assess cardiovascular inflammation.

Who it's for: Adults wanting a more sensitive assessment of inflammation.

HbA1c

HbA1c

Measures average blood sugar levels over recent weeks.

Who it's for: Adults wanting information about longer-term blood sugar levels.

Amylase

Amylase

An enzyme marker associated with pancreatic function.

Who it's for: Adults wanting information about pancreatic enzyme levels.

Lipid Profile

Total Cholesterol · HDL · LDL · Triglycerides

Measures cholesterol and triglycerides to assess cardiovascular risk.

Who it's for: Adults wanting to check cholesterol and lipid levels.

Apolipoprotein A1

Apolipoprotein A1

A specialist lipid marker associated with cardiovascular health. This test measures Apolipoprotein A1 only.

Who it's for: Adults wanting a more detailed lipid assessment.

Apolipoprotein B

Apolipoprotein B

A specialist lipid marker associated with cardiovascular risk. This test measures Apolipoprotein B only.

Who it's for: Adults wanting a more detailed lipid assessment.

Apolipoprotein A1 and B Profile

Apolipoprotein A1 · Apolipoprotein B

Combines Apolipoprotein A1 and Apolipoprotein B in a single profile.

Who it's for: Adults wanting both apolipoprotein markers together.

Lp-PLA2, PLAC

Lp-PLA2 (PLAC)

A specialist vascular inflammation marker associated with cardiovascular risk.

Who it's for: Adults wanting an advanced cardiovascular risk marker.

Creatinine with eGFR

Creatinine with eGFR

Assesses kidney function through creatinine and estimated glomerular filtration rate.

Who it's for: Adults wanting information about kidney function.

Liver Function Test, TLFT

Liver Function Test (TLFT)

A capillary-compatible liver profile. This capillary-compatible liver profile does not include ALT.

Who it's for: Adults wanting to check liver function using home collection.

Carbohydrate Deficient Transferrin, CDT

Carbohydrate Deficient Transferrin (CDT)

A specialist marker used to assess recent alcohol intake.

Who it's for: Adults wanting information about recent alcohol intake.

Testosterone

Testosterone

Measures testosterone levels. For a broader assessment, consider the Male Hormone Check.

Who it's for: Adults wanting to check testosterone levels.

Sex Hormone-Binding Globulin, SHBG

Sex Hormone-Binding Globulin (SHBG)

Measures SHBG, a protein that transports sex hormones.

Who it's for: Adults wanting information about hormone transport.

DHEA Sulphate

DHEA Sulphate

Measures an adrenal androgen associated with energy and hormonal balance.

Who it's for: Adults wanting information about adrenal androgen levels.

Cortisol

Cortisol

Measures cortisol, a hormone associated with the stress response. Collect your sample in the morning, ideally close to waking.

Who it's for: Adults wanting information about cortisol levels.

Antimüllerian Hormone, AMH

Antimüllerian Hormone (AMH)

Provides information about ovarian reserve.

Who it's for: Women wanting information about ovarian reserve.

Female Hormone Profile

LH · FSH · Prolactin · Oestradiol

A profile of key reproductive hormones.

Who it's for: Women wanting information about reproductive hormone levels.

HRT Profile 1

FSH · Oestradiol · Progesterone

A profile of hormones often used alongside hormone replacement therapy monitoring.

Who it's for: Women wanting information about hormones relevant to HRT monitoring.

Quantitative Beta hCG

Quantitative Beta hCG

Measures the level of hCG in the blood.

Who it's for: Adults wanting a quantitative hCG measurement.

Thyroid Profile 1

TSH · Free T4

A foundational thyroid profile measuring TSH and Free T4.

Who it's for: Adults wanting an initial thyroid assessment.

Thyroid Profile 3

TSH · Free T4 · Free T3

A broader thyroid profile including Free T3.

Who it's for: Adults wanting a more detailed thyroid assessment.

Thyroid Antibodies

Thyroid Antibodies

Measures thyroid-related antibodies for a broader view of thyroid health.

Who it's for: Adults wanting information about thyroid-related antibodies.

Ferritin — Iron Stores

Ferritin

Measures ferritin, reflecting your body’s iron stores. This is a Ferritin test, not an Iron Status Profile.

Who it's for: Adults wanting to check iron stores.

Active Vitamin B12

Active Vitamin B12

Measures the active form of vitamin B12.

Who it's for: Adults wanting to check vitamin B12 levels.

Vitamin D, 25-OH

Vitamin D, 25-OH

Measures vitamin D levels.

Who it's for: Adults wanting to check vitamin D levels.

Omega-3/Omega-6

Omega 3 · Omega 6

Measures omega-3 and omega-6 fatty acid levels.

Who it's for: Adults wanting information about essential fatty acids.

ALEX3 Allergy Profile

282 allergen components

A comprehensive allergy test measuring a wide range of allergen components.

Who it's for: Adults wanting a broad allergy assessment.

Gliadin Antibodies IgG

Gliadin Antibodies IgG

A coeliac-related antibody test. Further testing or medical interpretation may be required.

Who it's for: Adults wanting information about a coeliac-related antibody.

Tissue Transglutaminase IgA

Tissue Transglutaminase IgA

A coeliac-related antibody test. Further testing or medical interpretation may be required.

Who it's for: Adults wanting information about a coeliac-related antibody.

COVID-19 Spike Antibodies

COVID-19 Spike Antibodies

Measures antibodies to the SARS-CoV-2 spike protein.

Who it's for: Adults wanting information about COVID-19 spike antibodies.

Hepatitis B Surface Antigen

Hepatitis B Surface Antigen

Screens for the presence of hepatitis B surface antigen. This is distinct from a hepatitis B immunity test.

Who it's for: Adults wanting to check for hepatitis B infection.

Hepatitis B Immunity

Hepatitis B Immunity (antibodies)

Checks for markers of immunity to hepatitis B. This is distinct from a hepatitis B surface antigen test.

Who it's for: Adults wanting to check their immunity to hepatitis B.

Hepatitis C Antibodies

Hepatitis C Antibodies

Screens for antibodies to hepatitis C.

Who it's for: Adults wanting to check for hepatitis C exposure.

HIV 1 and 2 Antibodies/p24 Antigen

HIV 1 and 2 Antibodies/p24 Antigen

A fourth-generation HIV screen detecting antibodies and p24 antigen.

Who it's for: Adults wanting a confidential HIV screen.

Syphilis IgG/IgM

Syphilis IgG/IgM

Screens for antibodies to syphilis.

Who it's for: Adults wanting a confidential syphilis screen.

Prostate Specific Antigen, PSA

Prostate Specific Antigen (PSA)

Measures prostate specific antigen. This test cannot by itself diagnose or exclude cancer.

Who it's for: Men wanting information about PSA levels.

Prostate Profile: Total and Free PSA

Total PSA · Free PSA

Measures total and free PSA. This test cannot by itself diagnose or exclude cancer.

Who it's for: Men wanting a more detailed prostate assessment.

CA 125

CA 125

Measures CA 125, a marker sometimes associated with ovarian health. This test cannot by itself diagnose or exclude cancer.

Who it's for: Women wanting information about CA 125 levels.