1,25-dihydroxyvitamin D (calcitriol)
This test measures 1,25-dihydroxyvitamin D, the biologically active form of vitamin D. It is used to investigate calcium imbalance, kidney disease and...
Advanced GP4
449.00
The Advanced GP4 Package is our most comprehensive health screen, analysing over 100 biomarkers. Results are available within 3-5 working days.
Turnaround time
3-5 days
Biomarkers count
120
Same-Day Appointments
UKAS Accredited Labs
Book your test
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Details about Advanced GP4
The Advanced GP4 Profile is one of the most complete health screens available, offering an exceptionally detailed look at your internal health. Designed for individuals who want a deep, preventative, and diagnostic assessment, this profile covers everything from inflammation and immunity to hormonal balance, nutritional status, digestive health, metabolic markers, and more.
What’s Tested?
Muscle & Joint Health
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Creatine Kinase
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Uric Acid
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Rheumatoid Factor
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ESR (Erythrocyte Sedimentation Rate)
Infection & Inflammation
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C-Reactive Protein
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Albumin
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Complement Component 3
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Complement Component 4
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Ferritin
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Immunoglobulin A
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Immunoglobulin G
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Immunoglobulin M
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Anti-streptolysin O
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D-Dimer
Male Hormonal Health
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Testosterone
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Sex Hormone Binding Globulin
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Free Androgen Index
Female Hormonal Health
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Oestradiol
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Follicle Stimulating Hormone
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Luteinising Hormone
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Progesterone
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Prolactin
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Testosterone
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Sex Hormone Binding Globulin
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Free Androgen Index
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Cortisol
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DHEA-S
Nutritional Health
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Folic Acid
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Vitamin B12
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Total Antioxidant Status
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Zinc
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Copper
Bone Health
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Parathyroid Hormone (PTH)
Pancreatic Health
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Pancreatic Amylase
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Lipase
Digestive Health
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H. pylori
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Anti-Tissue Transglutaminase Antibodies
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CEA (Carcinoembryonic Antigen)
Allergy Evaluation
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Immunoglobulin E (IgE)
Urine & Microscopy
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Full urinalysis & microscopic examination: (includes specific gravity, protein, glucose, ketones, pH, red cells, white cells, epithelial cells, crystals, bacteria, casts)
The Advanced GP4 Profile also includes full panels from the Advanced GP2 screen:
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Full Blood Count
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Heart Health
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Liver Health
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Kidney Health
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Diabetes Health
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Iron Status
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Thyroid Health
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Metabolic Syndrome Screening
Why Choose the Advanced GP4 Profile?
Over 130 health markers analysed in a single test;
Full-body assessment including hormones, immunity, digestion, nutrition & inflammation;
Ideal for chronic symptoms, fatigue, stress, digestive issues, unexplained inflammation, weight issues, menopause/andropause, autoimmune screening & preventative health;
Comprehensive enough to detect early signs of disease;
Premium, high-resolution laboratory analysis.
How It Works
Simple steps to get your results
1
Book Online
Choose your test online and book in seconds. Select your preferred clinic location or home visit option.
2
Visit or Test at Home
Attend one of our UK or London clinics, arrange a home nurse visit, or use a finger-prick kit where available.
3
Get Your Results
Your sample is analysed by accredited UK laboratories, with secure results delivered directly to you.
Take control of your health with London Blood Tests
WhatsApp UsHow to Prepare for Your Test
Follow these guidelines for accurate results
Sample Timing
Where possible, attend your blood test between 7am and 12pm. Please wait until any short-term illness or infection has fully resolved before testing. Avoid intense exercise for 24–48 hours beforehand, as this can affect certain markers.
Fasting & Hydration
Fasting is not always required, but some tests may recommend it. If fasting is advised, avoid food for 8–12 hours before your appointment and drink water only. Stay well hydrated, as this helps with sample collection and accuracy.
Medications & Supplements
Continue prescribed medications unless advised otherwise by your clinician. Avoid vitamin, mineral, or biotin supplements for at least 24–48 hours before your test, as these can interfere with results. If you are unsure about any medication or supplement, please let us know before your appointment.
Hormones & Menstrual Cycle
For hormone-related tests, timing within your menstrual cycle may be important. If relevant, follow any specific guidance provided on your test page.
If you have any questions or special circumstances, our team is happy to advise before your appointment.
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