Preparing for your blood test
For anyone who has ordered a blood test from Juvenology.
Treatments this covers
Before your appointment
Some tests need fasting and some do not. HbA1c does not need fasting, for example, while glucose and insulin are best measured after an overnight fast. Some hormone tests are best taken in the morning or on a particular day of your cycle.
Each product page explains how to prepare, and we confirm the instructions when you book.
Order your test online and we will contact you to arrange your appointment. Samples can be taken at our Maidstone clinic or at a partner clinic near you, anywhere in the UK. Where the laboratory confirms a test is suitable for a finger-prick sample, we can post a kit for you to collect at home and return by post.
When to contact us
If you have questions about preparing for your test, call 07413 138 825, message us on WhatsApp or email office@juvenology.co.uk.
Clinically reviewed by Marina Kostadinova-Yankova (NMC-registered nurse) on 1 November 2026. Next review due 1 November 2027.