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What
Does Your Blood Test Mean?
Glucose:
This is the chief source of energy for all living organisms.
A level greater than 105 in someone who has fasted for 12
hours suggests a diabetic tendency. If this level is elevated
even in a non-fasting setting one must be concerned that there
is a risk for developing diabetes. This is an incredibly powerful
test and can predict diabetes ten years or more before one
develops the strict definition of diabetes which is levels
greater than 120.
Sodium: This element plays
an important role in salt and water balance in your body.
A low level in the blood can be caused by too much water intake,
heart failure, or kidney failure. A low level can also be
caused by loss of sodium in diarrhea, fluid or vomiting. A
high level can be caused by too much intake of salt or by
not enough intake of water.
Potassium and Magnesium:
These elements are found primarily inside the cells of the
body. Low levels in the blood may indicate severe diarrhea,
alcoholism, or excessive use of water pills. A very low level
of magnesium in the blood can cause your muscles to tremble.
Low potassium levels can cause muscle weakness and heart problems.
Chloride:
Is an electrolyte controlled by the kidneys and can sometimes
be affected by diet. An electrolyte is involved in maintaining
acid-base balance and helps to regulate blood volume and artery
pressure. Elevated levels are related to acidosis as well
as too much water crossing the cell membrane.
BUN (Blood
Urea Nitrogen): BUN is a waste product derived from protein
breakdown in the liver. Increases can be caused by excessive
protein intake, kidney damage, certain drugs, low fluid intake,
intestinal bleeding, exercise, heart failure or decreased
digestive enzyme production by the pancreas. Decreased levels
are most commonly due to inadequate protein intake, malabsorption,
or liver damage.
Creatinine: Creatinine
is also a protein breakdown product. Its level is a reflection
of the bodies muscle mass. Low levels are commonly seen in
inadequate protein intake, liver disease, kidney damage or
pregnancy. Elevated levels are generally reflective of kidney
damage and need to be monitored very carefully.
Uric Acid: Uric acid is the end product purine metabolism.
High levels are seen in gout, infections, high protein diets,
and kidney disease. Low levels generally indicate protein
and molybdenum (trace mineral) deficiency, liver damage or
an overly acid kidney.
Phosphate: Phosphate
is closely associated with calcium in bone development. Therefore
most of the phosphate in the body is found in the bones. But
the phosphate level in the blood is very important for muscle
and nerve function. Very low levels of phosphate in the blood
can be associated with starvation or malnutrition and this
can lead to muscle weakness. High levels in the blood are
usually associated with kidney disease. However the blood
must be drawn carefully as improper handling may falsely increase
the reading.
Calcium:
Calcium is the most abundant mineral in the body. It is involved
in bone metabolism, protein absorption, fat transfer, muscular
contraction, transmission of nerve impulses, blood clotting,
and heart function. It is highly sensitive to elements such
as magnesium, iron, and phosphorous as well as hormonal activity,
vitamin D levels, CO2 levels and many drugs. Diet, or even
the presence of calcium in the diet has a lot to do with "calcium
balance" - how much calcium you take in and how much
you lose from your body.
Albumin: The
most abundant protein in the blood, it is made in the liver
and is an antioxidant that protects your tissues from free
radicals. It binds waste products, toxins and dangerous drugs
that might damage the body. Is also is a major buffer in the
body and plays a role in controlling the precise amount of
water in our tissues. It serves to transport vitamins, minerals
and hormones. The higher this number is, the better. The highest
one can reasonably expect would be 5.5.
Alkaline Phosphatase:
Alkaline phosphatase is an enzyme that is found in all body
tissue, but the most important sites are bone, liver, bile
ducts and the gut. A high level of alkaline phosphatase in
your blood may indicate bone, liver or bile duct disease.
Certain drugs may also cause high levels. Growing children,
because of bone growth, normally have a higher level than
adults do. Low levels indicate low functioning adrenal glands,
protein deficiency, malnutrition or more commonly, a deficiency
in zinc.
Transaminases (SGTP)
& (SGOT): These are enzymes
that are primarily found in the liver. Drinking too much alcohol,
certain drugs, liver disease and bile duct disease can cause
high levels in the blood. Hepatitis is another problem that
can raise these levels. Low levels of GGTP may indicate a
magnesium deficiency. Low levels of SGPT and SGOT may indicate
deficiency of vitamin B6.
Gamma-Glutamyltranserase
(GGTP): Believed to be involved
in the transport of amino acids into cells as well as glutathione
metabolism. Found in the liver and will rise with alcohol
use, liver disease, or excess magnesium. Decreased levels
can be found in hypothyroidism and more commonly decreased
magnesium levels.
Lactate Dehydrogenase
(LDH): LDH is an enzyme found
in all tissues in the body. A high level in the blood can
result from a number of different diseases. Also, slightly
elevated levels in the blood are common and usually do not
indicate disease. The most common sources of LDH are the heart,
liver, muscles, and red blood cells.
Total Protein: This
is a measure of the total amount of protein in your blood.
A low or high total protein does not indicate a specific disease,
but it does indicate that some additional tests may be required
to determine if there is a problem.
Iron: The
body must have iron to make hemoglobin and to help transfer
oxygen to the muscle. If the body is low in iron, all body
cells, particularly muscles in adults and brain cells in children,
do not function up to par. If this test is low you should
consider getting a Ferritin test, especially if you are a
female who still has menstrual cycles.
Triglycerides:
These are fats used as fuel by the body, and as an energy
source for metabolism. Increased levels are almost always
a sign of too much carbohydrate intake. Decreased levels are
seen in hyperthyroidism, malnutrition and malabsorption.
Cholesterol:
Group of fats vital to cell membranes, nerve fibers and bile
salts, and a necessary precursor for the sex hormones. High
levels indicate diet high in carbohydrates/sugars. Low levels
indicate low fat diet, malabsorption, or carbohydrate sensitivity.
HDL/LDL:
LDL is the "bad cholesterol", which carries cholesterol
for cell building needs, but leaves behind any excess on artery
walls and in tissues. HDL is the "good cholesterol"
which helps to prevent narrowing of the artery walls by removing
the excess cholesterol and transporting it to the liver for
excretion. A low HDL percentage frequently indicates diets
high in refined carbohydrates and/or carbohydrate sensitivity.
CO2:
The CO2 level is related to the respiratory exchange of carbon
dioxide in the lungs and is part of the bodies buffering system.
Generally, when used with the other electrolytes, carbon dioxide
levels indicate pH or acid/alkaline balance in the tissues.
This is one of the most important tests that we measure. Most
people have too much acid in their body. If you garden you
will know that it is very difficult to grow plants in soil
where the pH is incorrect. Our blood is similar to soil in
many respects and it will be difficult to be healthy if our
body's pH is not well balanced.
WBC:
White blood count measures the total number of white blood
cells in a given volume of blood. Since WBCs kill bacteria,
this count is a measure of the body's response to infection.
Hemoglobin:
Hemoglobin provides the main transport of oxygen and carbon
in the blood. It is composed of "globin", a group
of amino acids that form a protein and "heme", which
contains iron. It is an important determinant of anemia (decreased
hemoglobin) or poor diet/nutrition or malabsorption.
Hematocrit:
Hematocrit is the measurement of the percentage of red blood
cells in whole blood. It is an important determinant of anemia
(decreased), dehydration (elevated) or possible overhydration
(decreased).
MCV: Thismeasures
the average size of the red blood cells and their volume.
These components together can indicate iron deficiency anemia
(decreased), B12/folate deficiency anemia (increased), or
rheumatoid arthritis (decreased).
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