Blood WorkMCHC (mean corpuscular hemoglobin concentration) is how concentrated the hemoglobin is inside your red blood cells. It's part of a complete blood count (CBC), and the typical range is about 32 to 36 g/dL. Low MCHC most often points to iron deficiency; high MCHC is uncommon and is often a lab artifact, or a sign of round, fragile red cells (spherocytes) that break down faster than usual. Read it with your hemoglobin, MCV and ferritin, not on its own.
What does MCHC measure?
Your red blood cells carry oxygen with a protein called hemoglobin. MCHC is the average amount of hemoglobin packed into a given volume of red cells. It's calculated by the lab from your hemoglobin and hematocrit, so it comes with every complete blood count at no extra cost.
MCHC sits alongside two related numbers: MCH, the hemoglobin in each cell, and MCV, the size of each cell. Clinicians use the three together to work out what kind of anemia, if any, you have.
What is a normal MCHC?
| Result | What it usually means |
|---|---|
| Below 32 g/dL | Low (hypochromic): red cells carry less hemoglobin than usual, most often from iron deficiency. |
| 32 to 36 g/dL | Typical adult range. |
| Above 36 g/dL | High: uncommon. Often a sample effect; sometimes a sign of red cells breaking down. |
Your lab's printed range applies; it can differ slightly. A single result just outside the range, with a normal hemoglobin, rarely means anything on its own.
What does low MCHC mean?
- Iron deficiency, by far the most common cause. A ferritin test confirms it.
- Thalassemia trait, an inherited condition that makes small, pale red cells with normal iron.
- Long-term inflammation or chronic disease, which can lower iron available for making red cells.
- Lead exposure and rare inherited anemias.
Low MCHC usually comes with a low MCV and MCH. If you're low in iron, the next question is why: heavy periods, diet, absorption problems or slow bleeding in the gut. In men and in women after menopause, iron deficiency anemia usually needs a check of the stomach and colon for slow bleeding (American Gastroenterological Association).
Call 911 or go to the ER if a low result comes with chest pain, fainting or severe shortness of breath. Get care the same day for black or bloody stools.
What does high MCHC mean?
- A sample or measurement effect, such as fatty blood after a meal, clumping of red cells in a cold sample (cold agglutinins) or red cells broken during the draw. A repeat test often comes back normal.
- Hereditary spherocytosis, an inherited condition that makes red cells small and round.
- Some kinds of red cell breakdown (hemolysis), such as autoimmune hemolytic anemia, which makes round, fragile red cells.
- Severe burns.
Because true high MCHC is uncommon, a high result is usually repeated before anything else is done.
If your MCHC is off at Passion Health
A Texas-licensed clinician reviews every result and calls you the same day about anything critical. One result outside the range is common and often harmless; we read it with the rest of your panel, your history and your medicines, and recheck when that's the sensible next step.
For low MCHC we usually check ferritin and iron studies, and look for the cause. For high MCHC we repeat the blood count and, if it holds, check for red cell breakdown. See the anemia and iron deficiency guide for the full workup.
MCHC test cost in Texas
Self-pay. MCHC comes with every complete blood count. In Essential Blood Work ($59) it's part of 33 results with the draw and a clinician's review included; on its own, the complete blood count is $20 plus the $29 draw and review fee ($49).
With insurance. If we're in network with your plan, we bill it when the test is covered. You pay cash for a test only after we tell you the price in writing, and Medicare patients sign an Advance Beneficiary Notice first.
MCHC blood test questions
What is MCHC in a blood test?
MCHC, mean corpuscular hemoglobin concentration, measures how concentrated hemoglobin is inside your red blood cells. It's part of a complete blood count, and the typical range is about 32 to 36 g/dL.
What does low MCHC mean?
Low MCHC means your red cells carry less hemoglobin than usual. The most common cause is iron deficiency; thalassemia trait and long-term inflammation are others. A ferritin test is the usual next step.
What does high MCHC mean?
High MCHC is uncommon. It's often caused by the sample itself, such as clumped or broken red cells, and a repeat test is usually normal. When it's real, it can point to hereditary spherocytosis or other conditions that make round, fragile red cells.
Should I be worried about a slightly low MCHC?
Usually not on its own. If your hemoglobin is normal and MCHC is just below 32, your clinician may simply recheck it or check your iron stores. Symptoms like tiredness or shortness of breath make it worth looking into.
How can I raise my MCHC?
Treat the cause. If it's iron deficiency, iron supplements and finding the reason for low iron usually bring MCHC back to normal over a few months. Don't start iron without a test, since thalassemia trait also lowers MCHC and doesn't need iron.