Men 70 - 180 µg/dL
Women 60 - 180 µg/dL
Children 50 - 120 µg/dL
Baby: 40 - 100 µg/dL
Newborn: 100 - 250 µg/dL
In the International System of Units (SI), iron in the blood is measured in µmol/L. The normal iron level in the blood in the SI is:
Men: 12.5 - 32.2 µmol/L
Women: 10.7 - 32.2 µmol/L
Children: 8.95 - 21.48 µmol/L
Baby: 7.16 - 17.9 µmol/L
Newborn: 17.9 - 44.8 µmol/L
Each laboratory must establish its own normal ranges for iron in the blood. These ranges depend on the makeup of the local population, the technologies used and the accuracy of the measurement. There may be also slight differences in the normal levels according to age, gender, race or ethnic origin, geographic region, diet, type of sample and other relevant status.
Your doctor will study the results along with your medical record, screenings, physical condition, symptoms and any other relevant information about your situation.
In women and children, normal ranges of iron in the blood are a bit lower than in men.
The Iron blood level varies throughout the day. Morning level is usually higher than afternoon level. The iron blood test is usually made in the morning.
Iron is found in the body in three ways:
There is also a small amount of free iron present in the blood that is not bound to other proteins.
The serum iron level (not of the heme group) is used to diagnose and monitor iron deficiency anemia, chronic nephropathy and hemochromatosis. Hemochromatosis is a disease where two iron pigments, hemosiderin and hemofucsina, are deposited in the tissues and produces skin pigmentation.
Iron blood test measures free serum iron. This test is performed along with ferritin, transferrin or TIBC (Total Iron-Binding capacity) and hemoglobin tests.
If iron in the blood is low, it can affect to the hemoglobin formation. Hemoglobin is essential to carry oxygen to the cells. Low iron levels may cause fatigue, muscle weakness or tiredness.
If iron in the blood is high, it may be deposited in different organs (brain, liver, heart and pancreas) causing diseases because iron can be toxic to these organs.
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The following values are considered to be normal values:
IMPORTANT: These levels are expressed in µg/dL. They are an example of a healthy woman of about 45 years old with no known disease and not taking any medication. The ranges can be different depending on the laboratory or on your personal circumstances.
|60 µg/dL||61 µg/dL||62 µg/dL||63 µg/dL||64 µg/dL||65 µg/dL||66 µg/dL||67 µg/dL|
|68 µg/dL||69 µg/dL||70 µg/dL||71 µg/dL||72 µg/dL||73 µg/dL||74 µg/dL||75 µg/dL|
|76 µg/dL||77 µg/dL||78 µg/dL||79 µg/dL||80 µg/dL||81 µg/dL||82 µg/dL||83 µg/dL|
|84 µg/dL||85 µg/dL||86 µg/dL||87 µg/dL||88 µg/dL||89 µg/dL||90 µg/dL||91 µg/dL|
|92 µg/dL||93 µg/dL||94 µg/dL||95 µg/dL||96 µg/dL||97 µg/dL||98 µg/dL||99 µg/dL|
|100 µg/dL||101 µg/dL||102 µg/dL||103 µg/dL||104 µg/dL||105 µg/dL||106 µg/dL||107 µg/dL|
|108 µg/dL||109 µg/dL||110 µg/dL||111 µg/dL||112 µg/dL||113 µg/dL||114 µg/dL||115 µg/dL|
|116 µg/dL||117 µg/dL||118 µg/dL||119 µg/dL||120 µg/dL||121 µg/dL||122 µg/dL||123 µg/dL|
|124 µg/dL||125 µg/dL||126 µg/dL||127 µg/dL||128 µg/dL||129 µg/dL||130 µg/dL||131 µg/dL|
|132 µg/dL||133 µg/dL||134 µg/dL||135 µg/dL||136 µg/dL||137 µg/dL||138 µg/dL||139 µg/dL|
|140 µg/dL||141 µg/dL||142 µg/dL||143 µg/dL||144 µg/dL||145 µg/dL||146 µg/dL||147 µg/dL|
|148 µg/dL||149 µg/dL||150 µg/dL||151 µg/dL||152 µg/dL||153 µg/dL||154 µg/dL||155 µg/dL|
|156 µg/dL||157 µg/dL||158 µg/dL||159 µg/dL||160 µg/dL||161 µg/dL||162 µg/dL||163 µg/dL|
|164 µg/dL||165 µg/dL||166 µg/dL||167 µg/dL||168 µg/dL||169 µg/dL||170 µg/dL||171 µg/dL|
|172 µg/dL||173 µg/dL||174 µg/dL||175 µg/dL||176 µg/dL||177 µg/dL||178 µg/dL||179 µg/dL|