What can we really learn from home blood testing kits?

Companies selling private blood tests offer customers a way to
check their health – from measuring cholesterol levels to thyroid
hormones – from the comfort of their home. But what happens if
there’s an abnormal result? Madeleine Finlay speaks to health
journalist Emma Wilkinson and consultant chemical pathologist Dr
Bernie Croal about how these tests work, how to interpret your
results and whether an already overstretched NHS is being left to
deal with the worried well. Help support our independent journalism
at theguardian.com/sciencepod