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 Lead blood test measures the level of lead circulating in the bloodstream. It helps identify recent or ongoing lead exposure and toxicity risk.
Turnaround time
5 days
Biomarkers count
1
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The Lead (Blood) test measures the concentration of lead present in whole blood. Lead is a toxic heavy metal with no safe physiological role in the human body.
Blood lead levels reflect recent and ongoing exposure, as lead circulates in the blood before being deposited in tissues such as bone, liver and kidneys. Even low-level exposure can be harmful, particularly with chronic exposure.
This test is used in environmental medicine, occupational health, paediatrics and toxicology to assess lead exposure and guide intervention.
Lead exposure can occur without obvious symptoms and may cause long-term health effects if not detected early.
You may need a Lead blood test if you:
Symptoms of lead exposure may include:
You can access Lead (Blood) testing UK-wide through two options:
Your sample is analysed in an accredited UK laboratory using validated heavy-metal testing methods.
Low blood lead level
No significant exposure detected.
Typical UK interpretation:
Moderately elevated blood lead level
Indicates exposure requiring investigation and monitoring.
Typical UK interpretation:
High blood lead level
Suggests significant lead exposure and potential toxicity.
Typical UK interpretation:
There is no completely safe level of lead; any elevation should be reviewed clinically.
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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