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A heart murmur is a sound made by blood moving through the chambers and valves of the heart or through the blood vessels near the

Homocysteine is an amino acid normally found in small amounts in the blood. Abnormal levels may mean that you are not getting

Hookworm disease is caused by a parasite that infects the intestines. Hookworms are usually found only in the tropics. Hookworms

An ingrown nail grows into the flesh instead of over it and usually affects the toes, particularly the big toe. The site of an

Some medical tests report results in milliequivalents per liter (mEq/L). An equivalent is the amount of a substance that will

Some medical tests report results in micrograms per liter (mcg/L). A microgram is one-millionth of a gram. A gram is about 1/30 of

Some medical tests report results in microliters (mcL). A microliter measures fluid volume. A microliter is one-millionth of a

Some medical tests report results in micromoles per liter (mcmol/L). A mole is an amount of a substance that contains a large

Some medical tests report results in milli-international units per liter (mIU/L). An international unit is an amount of a

Some medical tests report results in milliequivalents (mEq). An equivalent is the amount of a substance that will react with a