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MCH & MCHC Blood Tests: Everything to Know [2025]

MCH vs MCHC Blood Tests Guide

Blood tests are among the most valuable tools doctors use to understand a person’s overall health. Among these tests, MCH (Mean Corpuscular Hemoglobin) and MCHC (Mean Corpuscular Hemoglobin Concentration) provide critical insights into the oxygen-carrying capacity of your red blood cells.

These two measurements are essential because they offer clues about various health conditions affecting the blood, most notably anemia. But the importance of these tests doesn’t stop there.

MCH and MCHC blood test results can reveal much more about your health, including possible nutrient deficiencies, underlying diseases, and how well treatments for these conditions are working.

In this comprehensive guide, we’ll break down everything you need to know about MCH and MCHC blood tests—from what they are to what the results mean for your health.

What is MCH?

A patient's MCH blood sample

Definition of MCH

MCH stands for Mean Corpuscular Hemoglobin. It measures the average amount of hemoglobin inside your red blood cells. Hemoglobin is the protein that allows red blood cells to carry oxygen from your lungs to the rest of your body.

What Does MCH Measure?

MCH measures how much hemoglobin is in a single red blood cell. This is important because hemoglobin is what enables the red blood cell to carry oxygen.

If your MCH is within the normal range, your red blood cells are likely functioning properly. However, if your MCH is too low or too high, it could indicate a problem with your blood or overall health.

What Is the Normal Range for MCH?

The normal range for MCH typically falls between 27 to 33 picograms (pg) per cell. A picogram is a trillionth of a gram, so MCH measures extremely small quantities.

What Does It Mean if Your MCH Is Low?

A low MCH usually indicates that your red blood cells contain less hemoglobin than they should. This condition is often linked to iron deficiency anemia, which means your body doesn’t have enough iron to produce adequate hemoglobin.

Other causes of low MCH may include:

Thalassemia: A genetic disorder affecting hemoglobin production.

Chronic diseases: Conditions like chronic kidney disease or inflammatory disorders.

Blood loss: Significant blood loss can reduce hemoglobin levels.

Symptoms of low MCH can include fatigue, pale skin, shortness of breath, and a general lack of energy.

What Does It Mean if Your MCH Is High?

A high Mean Corpuscular Hemoglobin (MCH) result means that your red blood cells contain an above-average amount of hemoglobin. This is often linked to macrocytic anemia, a condition where red blood cells become abnormally large and carry more hemoglobin than normal.

High MCH can offer significant insights into underlying health issues, prompting further investigation into specific conditions that may be affecting hemoglobin levels and red blood cell production.

Interpreting High MCH Results: Causes, Symptoms, and Health Implications

Common Causes of High MCH:
  • Vitamin B12 or Folate Deficiency: A deficiency in vitamin B12 or folate disrupts normal red blood cell formation, leading to larger-than-average cells that contain excess hemoglobin. This nutrient deficiency is a common cause of high MCH and often requires dietary adjustments or supplementation.
  • Liver Disease: Chronic liver conditions, such as cirrhosis or hepatitis, can result in macrocytic anemia and high MCH values. The liver’s role in metabolism and detoxification affects red blood cell health, leading to larger cells with increased hemoglobin content.
  • Alcoholism: Excessive alcohol intake damages red blood cells, causing them to enlarge and carry more hemoglobin. This often leads to macrocytic anemia, with high MCH being a diagnostic indicator.
  • Chemotherapy Effects: Patients undergoing chemotherapy may experience elevated MCH due to red blood cell damage from treatment. Chemotherapy can alter the size and hemoglobin concentration of red blood cells, which can be monitored through MCH readings.
  • Chronic Obstructive Pulmonary Disease (COPD): COPD restricts oxygen intake, leading the body to adjust by increasing hemoglobin per red blood cell to maximize oxygen transport. This can elevate MCH as part of the body’s compensation mechanism.
  • Kidney Disease: Kidney function influences red blood cell production via erythropoietin. Kidney disease can lead to abnormal red blood cell production and higher MCH levels as the body adapts to maintain oxygen delivery.
  • Pulmonary Fibrosis: Scarring in the lungs from pulmonary fibrosis limits oxygen exchange. Similar to COPD, the body may compensate by increasing hemoglobin per cell, reflected in higher MCH values.
  • Thalassemia: A genetic blood disorder, thalassemia impacts hemoglobin structure, sometimes causing changes in red blood cell size and hemoglobin levels. In some cases, high MCH can appear as an adaptive response to these alterations.
Symptoms Associated with High MCH

People with high MCH may experience symptoms like:

  • Fatigue and Weakness: Reduced red blood cell efficiency can lead to fatigue and general weakness.
  • Neurological Issues: In cases of severe vitamin B12 deficiency, individuals may experience numbness, memory problems, or cognitive issues.
Data-Backed Insights and Reliable Resources

Complete Blood Count (CBC) results, including MCH levels, can offer crucial clues about the body’s oxygen transport efficiency and possible nutrient deficiencies. Reliable resources like Pubmed and others provide access to peer-reviewed studies and clinical insights on blood markers, helping interpret high MCH results with data-backed accuracy.

With the assistance of rigorous data entry services and a robust editorial policy, Smart Labs Now ensures that MCH-related findings are accurate, leveraging the latest studies on conditions ranging from liver disease to pulmonary health.

What is MCHC?

Another patient's MCHC blood sample

Definition of MCHC

MCHC stands for Mean Corpuscular Hemoglobin Concentration. It measures the concentration of hemoglobin in a given volume of red blood cells. Unlike MCH, which tells you how much hemoglobin is in each red blood cell, MCHC reveals how concentrated that hemoglobin is within the cells.

What Does the MCHC Blood Test Measure?

MCHC measures the hemoglobin concentration in the red blood cells, which can provide information about the quality of your red blood cells. This measurement helps identify certain types of anemia and other blood disorders.

What Is the Normal Range for MCHC?

The normal range for MCHC is typically between 32 to 36 grams per deciliter (g/dL). Anything below or above this range could indicate an underlying health issue.

What Does It Mean if Your MCHC Is Low?

A low MCHC often points to hypochromic anemia, where red blood cells have less hemoglobin than they should. This makes the cells appear paler than normal, hence the term “hypochromic.”

Causes of low MCHC include:

Iron deficiency: Just like with low MCH, iron deficiency can lead to low MCHC.

Chronic blood loss: Long-term blood loss can deplete your body’s iron reserves, leading to a lower concentration of hemoglobin.

Chronic disease anemia: Some chronic illnesses, such as kidney disease, can affect hemoglobin production.

What Does It Mean if Your MCHC Is High?

A high MCHC can indicate spherocytosis, a condition where red blood cells are more spherical than disc-shaped, causing them to carry more concentrated hemoglobin.

High MCHC can also occur due to:

Hereditary conditions: Spherocytosis is often hereditary.

Autoimmune hemolytic anemia: This occurs when the immune system mistakenly attacks and destroys red blood cells.

High MCHC values are less common than low ones but are still important for diagnosing certain health issues.

How Are MCH and MCHC Tests Performed?

A lab technician drawing a patient's blood sample.

What Is Involved in an MCH and MCHC Test?

MCH and MCHC are part of a larger blood panel, usually included in a complete blood count (CBC). To perform these tests, a healthcare provider will take a small blood sample, typically from a vein in your arm.

How Long Does It Take to Get the Results of an MCH and MCHC Test?

The actual blood draw takes only a few minutes. Results are typically available within 24 to 48 hours.

What Can You Expect After an MCH and MCHC Test?

There are minimal side effects from the blood test. Most people experience a small bruise or soreness at the site of the blood draw, which typically goes away within a day or two.

What Can the Results of MCH and MCHC Tests Tell You About Your Health?

MCH and MCHC test results

What Are Some of the Possible Causes of Low MCH and MCHC?

The most common causes of low MCH and MCHC include:

Iron-deficiency anemia

Chronic blood loss

Thalassemia

Each of these conditions reduces the hemoglobin content in your red blood cells, leading to a lower oxygen-carrying capacity.

What Are Some of the Possible Causes of High MCH and MCHC?

High MCH is often caused by:

Macrocytic anemia due to B12 or folate deficiency

Liver disease (potentially leading to cancer)

Alcoholism

High MCHC, though rarer, could indicate:

Spherocytosis

Autoimmune hemolytic anemia

How Can MCH and MCHC Tests Help to Diagnose and Treat Anemia?

By measuring the amount and concentration of hemoglobin in your red blood cells, MCH and MCHC tests help doctors determine the type of anemia you may have. This information is crucial for developing an effective treatment plan. For example:

Iron supplements may be recommended if low MCH and MCHC are due to iron deficiency.

Vitamin B12 or folate supplementation may be necessary if high MCH is due to a deficiency in these nutrients.

How Can MCH and MCHC Tests Help to Monitor the Effectiveness of Treatment for Anemia?

After starting treatment, your doctor may use follow-up MCH and MCHC tests to monitor how well the therapy is working. If your levels return to normal, it’s a good indication that the treatment is effective. If not, adjustments may be needed.

MCH vs. MCHC

MCH vs MCHC Comparison

What Are the Key Differences Between MCH and MCHC?

While both tests focus on hemoglobin in red blood cells, the key difference is what they measure:

MCH measures the total amount of hemoglobin in each red blood cell.

MCHC measures the concentration of hemoglobin in red blood cells.

When Is It Appropriate to Order an MCH Test?

An MCH test is typically ordered when a doctor suspects anemia or other blood disorders. It’s especially useful in identifying macrocytic and microcytic anemias, where red blood cells are either too large or too small.

When Is It Appropriate to Order an MCHC Test?

An MCHC test is often used alongside the MCH test to provide a fuller picture of your blood health. It’s particularly helpful in diagnosing hypochromic anemias, where red blood cells have less hemoglobin than normal.

Can MCH and MCHC Tests Be Ordered Together?

Yes, MCH and MCHC are usually ordered together as part of a complete blood count. Together, these tests help doctors identify the underlying cause of anemia and other blood disorders more accurately.

MCHC Blood Test Normal Range for Male and Female

Posing man and woman

What Is the Normal Range for MCHC in Men?

For men, the normal MCHC range is typically between 32 to 36 g/dL (individual lab ranges may vary).

What Is the Normal Range for MCHC in Women?

For women, the normal MCHC range is the same. However, certain conditions like pregnancy may slightly alter these values.

What Factors Can Affect the Normal Range for MCHC Blood Test?

Several factors can affect MCHC levels, including:

Age

Nutritional status: Deficiencies in iron, B12, or folate can impact MCHC.

Chronic diseases: Conditions like liver or kidney disease can alter red blood cell characteristics.

Further Concerns

A lab tech centrifuging a blood sample.

The Role of MCH and MCHC Tests in Diagnosing Other Health Conditions

Beyond anemia, abnormal MCH and MCHC levels can indicate other health problems, including liver disease, kidney disease, and alcohol-related disorders. Monitoring these values can help doctors diagnose these conditions early.

Receiving Results & The Importance of Following Up with Your Doctor

If your MCH or MCHC results are abnormal, it’s important to follow up with your doctor. Abnormal results could point to underlying health issues that need treatment.

Information About the Cost of MCH and MCHC Tests

The cost of MCH and MCHC tests varies based on your location, insurance coverage, and the lab performing the test. Typically, these tests are included in a routine complete blood count (at Smart Labs Now, we offer it along with several others as part of our ‘Complete Blood Chemistry’ panel 🙌), which can range from $10 to $150 (and more).

Tips for Preparing for an MCH and MCHC Blood Test

There’s usually no special preparation needed for these tests. However, it’s a good idea to inform your doctor about any medications or supplements you’re taking, as some can affect your blood test results.

Keep Testing 😃

A lab technician giving the thumbs up sign.

MCH and MCHC blood tests are crucial in diagnosing and managing anemia and other blood disorders. By measuring the amount and concentration of hemoglobin in red blood cells, these tests offer valuable insights into your overall health.

Whether you’re experiencing fatigue, weakness, or other symptoms, understanding your MCH and MCHC levels can help pinpoint the cause and guide your treatment. Regular testing and follow-ups with your healthcare provider can ensure you’re on the right path to managing your health effectively.


Please consult your primary care physician before engaging with any pharmaceutical, natural substances, or activity regimens mentioned or prescribed in this post. Smart Labs Now is not responsible for any health or life outcomes resulting from the use of the information or recommendations provided. This account does not serve as a substitute for professional medical advice.

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