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Blood lead level (BLL), is a measure of the amount of lead in the blood. [1] [2] Lead is a toxic heavy metal and can cause neurological damage, especially among children, at any detectable level. High lead levels cause decreased vitamin D and haemoglobin synthesis as well as anemia, acute central nervous system disorders, and possibly death. [3]
Reference ranges (reference intervals) for blood tests are sets of values used by a health professional to interpret a set of medical test results from blood samples. Reference ranges for blood tests are studied within the field of clinical chemistry (also known as "clinical biochemistry", "chemical pathology" or "pure blood chemistry"), the ...
At blood lead levels between 25 and 60 μg/dL, neuropsychiatric effects such as delayed reaction times, irritability, and difficulty concentrating, as well as slowed motor nerve conduction and headache can occur. [40] Anemia may appear at blood lead levels higher than 50 μg/dL. [36]
Over 170 million U.S.-born people who were adults in 2015 were exposed to harmful levels of lead as children, a new study estimates. Researchers used blood-lead level, census and leaded gasoline ...
An anemia is a decrease in number of red blood cells (RBCs) or less than the normal quantity of hemoglobin in the blood. [2] [3] However, it can include decreased oxygen-binding ability of each hemoglobin molecule due to deformity or lack in numerical development as in some other types of hemoglobin deficiency. [citation needed]
The reference ranges for the complete blood count represent the range of results found in 95% of apparently healthy people. [note 2] [35] By definition, 5% of results will always fall outside this range, so some abnormal results may reflect natural variation rather than signifying a medical issue. [36]
For the first time, the US Food and Drug Administration has set a limit on the amount of lead that can be in baby foods, but critics say it’s too little, too late.
[34] [35] [36] In premenopausal females, normal range of serum ferritin is between 12 and 150 [34] or 200 [35] ng/mL (330 or 440 pmol/L). [36] In those with hemochromatosis, the serum ferritin level correlates with the degree of iron overload. [7] Ferritin levels are usually monitored serially in those with hemochromatosis to assess response to ...