Struggling to fall asleep, stay asleep, or wake up feeling rested? While sleep problems have many causes, certain nutrient deficiencies and hormone imbalances are known to disrupt sleep quality and are simple to check with a finger-prick blood test.
Our sleep-related test kits screen for key markers linked to poor sleep, including iron stores (ferritin), thyroid function, and vitamin D, all of which can affect how well you sleep when out of range. Low ferritin is associated with restless legs and disturbed sleep, an underactive or overactive thyroid can cause excessive tiredness or insomnia, and vitamin D deficiency has been linked to poor sleep quality in several studies.
Testing at home is straightforward: order your kit online, take a small finger-prick sample, and post it to our UK laboratory using the prepaid envelope provided. Results are typically available within days, with clear reference ranges so you can see exactly where you stand.
It's worth noting that blood tests cannot diagnose sleep disorders such as sleep apnoea or insomnia. They're designed to help identify underlying physical factors that may be contributing to poor sleep, alongside other lifestyle and health considerations. If sleep problems persist, we'd always recommend speaking with your GP.
Browse our sleep-related test kits below, or explore individual tests for Ferritin, Thyroid Function, and Vitamin D.
