Red cell zinc blood test in Chiswick

What the test measures

Zinc is a trace mineral that supports the immune system, wound healing, taste and smell, skin health and the activity of many enzymes. It is found in meat, shellfish, dairy, beans, nuts and wholegrains. Plant foods contain phytates that reduce zinc absorption, so people on vegan diets may need more.

Serum zinc is the usual NHS test, but it falls during infection or inflammation and changes after meals. Red cell zinc measures the zinc held in red cells over their lifespan of about three to four months, and some practitioners use it as a complementary, longer-term measure. It is read alongside other results rather than on its own.

The price includes the sample taken at our Chiswick clinic, analysis at the Randox accredited laboratory, a practitioner review of your result, and a GP feedback report on request.

Who it is for

• You follow a vegan or vegetarian diet and want to check your zinc status.
• You have noticed slow wound healing, changes in taste or frequent infections.
• You have a digestive condition such as coeliac disease or Crohn disease.
• You take zinc supplements and want to check your level, as high zinc can lower copper.
• You have had a serum zinc result during an illness and would like a steadier measure.

Understanding your result

Your report shows your red cell zinc level against the laboratory reference range. A low result may suggest reduced zinc intake or absorption over recent months. A raised level is usually related to supplements and, over time, may affect copper balance.

Your practitioner will consider your diet, symptoms and supplements when reading the result. Falling outside the range is a cue for discussion and does not amount to a diagnosis.

Preparing for your test

You are free to eat and drink normally beforehand. Please list any zinc, multivitamin, iron or copper supplements and any cold remedies containing zinc, along with any digestive conditions. We will confirm the details of your preparation when you book.

Because zinc and copper interact, a red cell copper test can be useful alongside this one. For a broader look at nutrition, Nutritional and Digestive Health covers several diet-related markers. You can browse every blood test and price in Chiswick.

Questions

How much is a red cell zinc test in Chiswick?

The Red Cell Zinc test costs £99. It includes the blood sample at our Chiswick clinic, analysis at the Randox accredited laboratory, a practitioner review of your result, and a GP feedback report on request.

Why test red cell zinc rather than serum zinc?

Serum zinc can drop during illness and changes after eating. Red cell zinc reflects a longer period and is used as a complementary measure.

Can too much zinc be harmful?

Yes. Long-term high doses can lower copper levels and affect blood cells. The NHS advises not to take more than 25 milligrams of zinc supplements a day unless advised by a doctor.

Do vegans need to worry about zinc?

Vegans can get enough zinc but may need to pay more attention to sources. Your practitioner can review your result and diet with you.