How much zinc do I need?

The NHS says adults aged 19 to 64 need about 9.5mg a day for men and 7mg a day for women. Most people can get this from their diet.

Can you take too much zinc?

Yes. High doses of zinc reduce how much copper your body can absorb, which can lead to anaemia and weaker bones. The NHS advises not taking more than 25mg of zinc supplements a day unless a doctor advises it.

Energy & nutrition

Private blood test

Zinc Blood Test

Measures zinc, a mineral involved in immunity, wound healing and growth.

1 biomarker
No fasting needed

£59Includes sample collection

Book this test Ask a question

We confirm your appointment and any preparation, such as fasting, before you attend.

What’s included

1 biomarker in this test.

No fasting needed

Body salts & minerals1

Electrolytes and minerals that help your nerves, muscles and heart work properly.

Zinc

About this test

Is the Zinc Blood Test right for you?

Who it’s for

You eat few of the foods that provide most zinc, such as meat, shellfish, dairy foods and cereal products, and want to check your level.
You take zinc supplements and want to check your level.
A doctor or dietitian has suggested checking your zinc as part of a wider look at your nutrition.

What it can show

The test measures zinc in your blood. Zinc helps your body make new cells and enzymes, use the carbohydrate, fat and protein in food, and heal wounds.
A result outside the expected range may suggest that your zinc intake or absorption needs looking at with a doctor.

What it can’t tell you

Blood zinc levels are affected by things other than your zinc intake, including your albumin (a blood protein), the time of day and when you last ate.
Zinc falls during illness and inflammation. NHS laboratory guidance is to measure zinc 2 weeks after a short-term illness has settled.
One result is a snapshot. A low result may need repeating before any decision is made.
Results are interpreted alongside your symptoms and diet. Diagnosis and treatment are made with your GP or specialist.

How it works

From booking to results in three steps.

Step 1
Request your test
Send a booking request online or call us. We confirm your clinic, appointment time and any preparation.
Step 2
Visit the clinic
A short appointment for professional sample collection at Greysteel or Letterkenny. No GP referral needed.
Step 3
Receive your results
Usually within a couple of working days, emailed to you once a doctor has reviewed them.

Common questions