Skip to content
Trusted to do 100,000+ tests and consultations per month.
Trusted to do 100,000+ tests and consultations per month.

NOTES FROM THE LAB

Hello! My name is Jamila Quaye and I am a senior biomedical scientist with a specialism in haematology, here at One Day Tests laboratory.

Iron - description and reference ranges

What is it?

Iron is a mineral in you body that is essential for a range of functions. Iron is a major component of haemoglobin, a main type of protein in red blood cells that carries oxygen around your body. Low iron levels mean not enough oxygen circulating in the blood stream, leading to all sorts of problems, including fatigue and general weakness.

Iron is essential for healthy muscle and brain development, balanced growth and for the sufficient production of hormones in your body.

According to the NHS, the amount of iron you need is:

  • 8.7mg a day for men over 18
  • 14.8mg a day for women aged 19 to 50
  • 8.7mg a day for women over 50

You should be able to get all the iron you need from your daily diet.

Reference ranges

If your indicative iron level is lower than the reference range for our laboratory:

Most people should be able to get all the iron they need by eating a varied and balanced diet. If you take iron supplements, do not take too much as this could be harmful.

You should discuss how to manage your iron levels and this result with your GP.

If your indicative iron level is higher than the reference range for our laboratory:

Generally, high levels of iron are not beneficial. Too much iron can lead to feeling sick and vomiting, stomach issues and constipation and extremely high level of iron can lead to very serious problems and organ failures.

You should discuss this result with your GP.

QUICK TEST FINDER

Find what you need in under 30 seconds with our (very clever!) test finder.

We offer a huge range of markers all a few clicks away, as well as fastest turnaround times.

FIND YOUR TEST
QUICK TEST FINDER

YOU MAY ALSO LIKE TO READ

  • kidney model
    Dr. Adam Staten

    WHAT IS THE NORMAL RANGE FOR KIDNEY FUNCTION TEST?

    Kidney function tests are commonly used to check how well the kidneys are working, but receiving a result can be confusing if you are unsure what is considered normal. Many people are told their kidney function is slightly reduced or borderline without a clear explanation of what the numbers mean or whether there is cause for concern. Understanding the normal ranges helps put results into context and explains why factors such as age, hydration and overall health are taken into account.
    Read now
  • sodium blood test sample
    Dr. Adam Staten

    WHAT DOES SODIUM LEVEL IN A BLOOD TEST MEAN?

    Sodium is an essential electrolyte that helps regulate fluid balance, nerve signals, and muscle function in the body. When you have a sodium blood test, it measures how much sodium is present in your bloodstream at that moment. Even small changes in sodium levels can affect how the body functions, which is why this test is commonly used in both routine checks and symptom investigation.
    Read now
  • igf1 blood test sample
    Dr. Adam Staten

    WHAT DOES IT MEAN WHEN YOUR IGF 1 IS HIGH?

    IGF 1, or insulin-like growth factor 1, is a hormone that reflects how much growth hormone your body is producing over time. When IGF 1 levels are high, it usually means that growth hormone activity is increased. However, this does not automatically indicate a serious condition, as IGF 1 levels can rise for several different reasons.
    Read now