Which is the Blood Test for Zinc Deficiency

How to Test for Zinc Deficiency?

What is Zinc Deficiency?

When it comes to maintaining optimal health, it's important to ensure that your body is getting all the essential nutrients it needs. One such nutrient that plays a crucial role in various bodily functions is zinc. Zinc is involved in immune function, protein synthesis, wound healing, and DNA synthesis, among other important processes. However, zinc deficiency is a common issue that can have detrimental effects on your health. To determine if you have a zinc deficiency, a serum zinc test can be conducted.

What are the Symptoms of Zinc Deficiency?

Zinc deficiency can manifest in various ways and may present with symptoms such as:
  • Delayed wound healing
  • Loss of appetite
  • Hair loss
  • Impaired sense of taste and smell
  • Diarrhoea
  • Impaired immune function

If you are experiencing any of these symptoms or suspect that you may have a zinc deficiency, it is important to consult with a healthcare professional who can guide you through the necessary tests and provide appropriate treatment.

Zinc is an essential mineral supporting immunity, growth, DNA, and much more. A zinc blood test is needed to confirm if deficiency is causing health issues.

How to Test for Zinc Deficiency?

There are several methods used to test for zinc deficiency:

  1. Blood tests
    • Serum zinc test: This measures the level of zinc in the liquid portion of the blood (serum). Low serum zinc levels can indicate a deficiency.
    • Plasma zinc test: Similar to the serum test, but measures zinc levels in the plasma portion of the blood.
  2. Urine tests
    • 24-hour urine zinc test: This measures the amount of zinc excreted in the urine over a 24-hour period. High levels of zinc in the urine can indicate a deficiency, as the body is unable to conserve zinc adequately.
  3. Hair analysis
    • Zinc levels in hair can provide an estimate of zinc status over a longer period (several months) compared to blood or urine tests.
    • However, hair analysis is less reliable and can be affected by external contamination or hair treatments.
  4. Taste test
    • In this simple test, a zinc sulfate solution is placed on the tongue. If the person can taste the solution (typically described as a metallic or dry taste), it suggests adequate zinc levels. If they cannot taste it, it may indicate a zinc deficiency.
  5. Dietary assessment
    • Evaluating the individual's dietary intake of zinc-rich foods (e.g., meat, seafood, nuts, seeds, whole grains) can help identify potential deficiencies due to inadequate zinc consumption.
  6. Evaluation of clinical symptoms
    • Certain symptoms, such as impaired growth, delayed wound healing, loss of appetite, and taste disturbances, can be associated with zinc deficiency and may prompt further testing.

It's important to note that no single test is definitive for diagnosing zinc deficiency. Healthcare professionals often consider a combination of test results, dietary assessment, and clinical symptoms when evaluating zinc status.

In cases of suspected deficiency, zinc supplementation may be recommended, and follow-up testing can be done to monitor the effectiveness of treatment and ensure zinc levels return to normal.

Blood Test for Zinc Deficiency

The most common blood test used to assess zinc deficiency is the serum or plasma zinc test. Here are some details about this blood test:

Serum/Plasma Zinc Test
  • This test measures the amount of zinc present in the liquid portion of the blood (serum or plasma).
  • A low serum/plasma zinc level is an indicator of zinc deficiency.
  • Normal serum zinc levels typically range from 60-120 micrograms per deciliter (mcg/dL) or 9-18 micromoles per liter (μmol/L).
  • Levels below 60 mcg/dL or 9 μmol/L are generally considered deficient.
Test Procedure
  • A blood sample is drawn from a vein, usually in the arm.
  • The sample is sent to a laboratory for analysis.
  • Various analytical techniques like atomic absorption spectrometry or inductively coupled plasma mass spectrometry can be used to measure zinc levels.
Factors Affecting Results
  • Fasting may be required before the test to ensure accurate results.
  • Certain medications, supplements, and conditions can affect zinc levels and test interpretation.
  • Acute infections or inflammatory conditions can cause temporary zinc deficiency due to redistribution of zinc in the body.
  • Serum/plasma zinc levels can fluctuate and may not always reflect the body's total zinc status or zinc levels in tissues.
  • In cases of marginal or mild deficiency, serum/plasma zinc levels may still appear normal.
  • Additional tests or clinical assessments may be needed for a comprehensive evaluation of zinc status.

It's important to note that the serum/plasma zinc test alone is not a definitive diagnostic tool for zinc deficiency. Healthcare providers often consider the test results in conjunction with other factors, such as dietary intake, clinical symptoms, and overall health status, when assessing and managing zinc deficiency.

Regular monitoring of serum/plasma zinc levels may be recommended for individuals at risk of deficiency or those undergoing treatment with zinc supplementation.

What is a Serum Zinc Test?

A serum zinc test is a simple blood test that measures the level of zinc in your blood. It is the most common method used to diagnose zinc deficiency. The test measures the concentration of zinc in your serum, which is the liquid part of your blood. By analysing the zinc levels in your blood, healthcare professionals can determine if you have a zinc deficiency.

How Does the Zinc Test Work?

The serum zinc test is typically performed by drawing a small sample of blood from a vein in your arm. The blood sample is then sent to a laboratory for analysis. In the lab, the sample is processed to separate the serum from the other components of the blood. The concentration of zinc in the serum is then measured using specialized equipment.

What Do the Zinc Test Results Mean?

The results of the serum zinc test are usually reported as the concentration of zinc in micrograms per decilitre (µg/dL) or millimoles per liter (mmol/L) of serum. The normal range for serum zinc levels can vary slightly depending on the laboratory, but generally falls between 70 and 120 µg/dL (or 10.7 and 18.4 µmol/L).

If your serum zinc levels are below the normal range, it indicates a zinc deficiency. However, it's important to note that a single low serum zinc test result may not be sufficient to diagnose a deficiency. Additional tests and evaluation of your symptoms and medical history may be necessary to confirm the diagnosis.

Video on Zinc Deficiency

When it comes to maintaining a healthy body, proper nutrition is key. One essential mineral that often goes unnoticed but plays a crucial role in our overall well-being is zinc. In this blog post, we will explore the importance of zinc and delve into the topic of zinc deficiency.

#zincdeficiency #zinctest #mineraltest

What is Zinc, and Why is it Important?

Zinc is a trace mineral that is involved in numerous bodily functions. It is required for the proper functioning of over 300 enzymes and is essential for the synthesis of DNA, protein, and collagen. Zinc also plays a vital role in supporting a healthy immune system, promoting wound healing, and maintaining healthy skin and hair.

What Causes Zinc Deficiency?

Zinc deficiency can occur due to various reasons. Inadequate dietary intake is one of the primary causes, especially in individuals who follow a vegetarian or vegan diet. Certain medical conditions, such as malabsorption disorders, gastrointestinal diseases, and chronic liver or kidney diseases, can also lead to zinc deficiency. Additionally, alcoholism, pregnancy, and breastfeeding can increase the risk of zinc deficiency.

How a Zinc Blood Test Ordered in Pune?

A zinc blood test measures the level of zinc circulating in the bloodstream. A small blood sample is taken and sent to an accredited lab for analysis.

The test is affordable, convenient, and results are delivered quickly through healthcare nt sickcare. Doctors then provide guidance on restoring optimal zinc status.

What are the Common Symptoms of Deficiency?

Low zinc levels can result in:

  • Frequent infections
  • Loss of appetite
  • Diarrhoea
  • Hair loss
  • Skin conditions

How to Diagnose Zinc Deficiency?

If you suspect you may have a zinc deficiency, it is important to consult with a healthcare professional. They may recommend a serum zinc test, which measures the level of zinc in your blood. This simple blood test can help determine if you have a zinc deficiency and guide appropriate treatment.

How to Treat Zinc Deficiency?

Zinc deficiency is a condition that should not be overlooked. By understanding the importance of zinc and recognizing the signs of deficiency, you can take proactive steps to maintain optimal health. If you suspect you may have a zinc deficiency, consult with a healthcare professional who can guide you towards the appropriate diagnosis and treatment.

If diagnosed with a zinc deficiency, your healthcare provider may recommend zinc supplements or dietary changes to increase your zinc intake. Foods rich in zinc include oysters, beef, lamb, pumpkin seeds, and legumes. It is important to follow your healthcare provider's advice and not exceed the recommended daily intake of zinc, as excessive zinc can have adverse effects on your health.


The serum zinc test is a valuable tool in diagnosing zinc deficiency. By measuring the concentration of zinc in your blood, healthcare professionals can assess your zinc status and determine if you require supplementation or dietary changes. If you suspect you may have a zinc deficiency, don't hesitate to seek medical advice. Remember, maintaining adequate zinc levels is essential for overall health and well-being.

Monitoring zinc levels supports health, especially for those at risk of deficiency. We provide efficient zinc testing. Get screened today!

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