A simple checklist
- Fasting. Only some tests need it, usually 8 to 12 hours with water allowed. See do I need to fast before a blood test.
- Water. Drinking water beforehand is fine, even when fasting, and can make the sample easier to take.
- Medicines. Keep taking prescribed medicines unless your doctor has told you otherwise, and tell us what you take, especially blood-thinning medicines.
- Supplements. Biotin, found in many hair, skin and nail products, can affect some test results, including thyroid tests. Tell us if you take it and we will advise when to pause it.
- Exercise. Hard exercise the day before can raise some markers, such as muscle enzymes and liver enzymes, so keep it light.
- Timing. Some tests, such as some hormone tests, are best taken at a particular time of day or point in your cycle. We tell you when you book.
- Clothing. A top with sleeves that roll up easily helps.
If you are nervous
Tell us if you are anxious about needles or have fainted before. You can lie down for the sample, bring someone with you, and take your time. See what happens at a blood test appointment.
At Omnia
Omnia Lifestyle is at 8 to 9 Bedford Corner, The Avenue, Chiswick, London W4 1LZ, two minutes from Turnham Green station, close to the Turnham Green and Bedford Park streets and on bus routes 94, E3 and 272. No GP referral is needed. Your sample is analysed by the Randox accredited laboratory, most results are back within a few working days, and a practitioner explains every result with you. See every blood test and price or call 020 4515 0000.