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...
The Advanced GP3 Package is our most comprehensive health screen, analysing over 120 biomarkers. Results are available within 3-5 working days.
Turnaround time
2-3 days
Biomarkers count
127
Professional phlebotomist comes to you
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Visit our clinic for your test
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SelectedAt London Blood Tests, we are proud to offer the Advanced GP3 Package, Randox's largest and most exclusive health screen, covering over 150 data points across key health areas. This comprehensive package builds on the Advanced GP2, offering an unparalleled level of detail in health assessment, making it ideal for those seeking the most thorough evaluation available.
Kidney Health:
Heart Health:
Liver Health:
Bone Health:
Diabetes Health:
Iron Status:
Urinalysis:
Thyroid Health:
Tumor Markers:
Infection & Inflammation:
Male Hormonal Health (M):
Female Hormonal Health (F):
Pancreatic Health:
Nutritional Health:
Digestive Health:
Allergy Evaluation:
Benefits of the Advanced GP3 Package
Simple steps to get your results
Choose your test online and book in seconds. Select your preferred clinic location or home visit option.
Attend one of our UK or London clinics, arrange a home nurse visit, or use a finger-prick kit where available.
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 UsFollow these guidelines for accurate results
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 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.
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.
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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