Apolipoprotein E (12 hours fasting)
This test measures Apolipoprotein E after fasting to assess lipid transport and metabolism. It supports cardiovascular risk evaluation.
Turnaround time
7 days
Biomarkers count
1
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Details about Apolipoprotein E (12 hours fasting)
The Apolipoprotein E (ApoE) Blood Test measures ApoE, a protein involved in cholesterol transport and lipid metabolism. Variations in ApoE are associated with differences in cardiovascular risk, lipid response to diet, and metabolic health. Testing is performed in a UKAS-accredited laboratory, with 12 hours fasting required and an optional GP consultation.
What is an Apolipoprotein E (ApoE) Blood Test?
Apolipoprotein E (ApoE) plays a central role in how the body transports and clears cholesterol and triglycerides from the bloodstream. It helps regulate the interaction between lipoproteins and liver receptors.
Different ApoE patterns influence:
- LDL cholesterol levels
- Triglyceride metabolism
- Response to dietary fat
- Cardiovascular disease risk
Unlike standard cholesterol tests, ApoE provides insight into how your body handles lipids, rather than just measuring lipid levels at one moment in time.
This test is often used alongside:
- Apolipoprotein B (ApoB)
- Apolipoprotein A1 (ApoA1)
- Lipid profile
to support advanced cardiovascular and metabolic risk assessment.
Benefits of the Apolipoprotein E Test
- Insight Into Cholesterol Metabolism
Explains why cholesterol may be high despite lifestyle changes. - Supports Cardiovascular Risk Assessment
Identifies inherited lipid-handling tendencies. - Guides Personalised Diet & Lifestyle Choices
Helps tailor fat intake and metabolic strategies. - Useful in Metabolic & Lipid Disorders
Valuable in insulin resistance and dyslipidaemia. - Complements Advanced Lipid Testing
Adds context to ApoB and cholesterol results. - Simple Blood Test With High Clinical Value
Non-invasive and informative. - Optional GP Consultation for Interpretation
Results reviewed with a GP for personalised guidance.
Why Do I Need an Apolipoprotein E Test?
You may benefit from an ApoE test if you:
- Have high cholesterol with no clear cause
- Have a family history of heart disease
- Have metabolic syndrome or insulin resistance
- Want a personalised lipid risk assessment
- Are monitoring cardiovascular prevention strategies
Situations where ApoE testing is helpful:
- Poor response to standard cholesterol-lowering approaches
- Advanced heart health screening
- Preventive metabolic health planning
Because lipid metabolism varies between individuals, ApoE testing supports precision prevention.
How the Test Works
In-Clinic Testing at London Blood Tests
- Book Your Appointment
- Online or phone booking
- 12 hours fasting required (water allowed)
- Pre-Test Guidance
- Avoid alcohol and heavy exercise before testing
- Continue prescribed medications unless advised otherwise
- Sample Collection
- Venous blood sample collected by a trained phlebotomist
- Takes 5–10 minutes
- Laboratory Analysis
- Tested in a UKAS-accredited laboratory
- Quality Control
- Results validated before release
- Results Delivery
- Results typically available within 2–4 business days
- Optional GP Consultation
- Discuss implications for lipid and cardiovascular health
At-Home Blood Draw (Home or Hotel Phlebotomy – UK-Wide)
- Book a Phlebotomist Visit
- Home or hotel blood draw arranged
- Professional Collection
- Sample taken following fasting requirements
- Secure Transport
- Sample couriered same day
- Laboratory Testing
- Identical analysis to clinic testing
- Results & Follow-Up
- Online results, GP review optional
Your Apolipoprotein E Results – Explained
ApoE results are reported as concentration or phenotype, depending on laboratory method.
General interpretation:
- Lower ApoE levels: may be linked to impaired lipid clearance
- Normal ApoE levels: typical cholesterol transport
- Higher ApoE levels: may be associated with altered triglyceride metabolism
Important notes:
- ApoE results should always be interpreted alongside ApoB, ApoA1, LDL, and triglycerides
- Results reflect lipid handling, not a diagnosis
- Clinical interpretation depends on overall risk profile
How It Works
Simple steps to get your results
Book Online
Choose your test online and book in seconds. Select your preferred clinic location or home visit option.
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.
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.