27/04/2018
Blood CP is a very common test performed in the Pathology lab for the purpose of diagnosis of various conditions, this post will be very useful for homeopathic students, doctors and paramedical staff in understanding the basics of this test:
Blood C P (blood complete picture)
The test includes following
RBC count
RBC’S are the blood cells which carry and transport oxygen in the body; they are red in color due to the presence of a pigment called hemoglobin
RBC count is lower than normal in most of the cases of anemia
Normal values:
Male: 4.5 to 5.5 million / L
Female: 3.8 to 4.8 million / L
Red blood cells
Hemoglobin
It is a red colored pigment found in red blood cells, its function is to bind with oxygen and carry it to each and every cell of the body.
Normal values:
Male: 13 to 17 gram/dl
Female: 12 to 15 gram/dl
Anemia
It is defined as lack of hemoglobin below normal levels for the age, s*x and environment of an individual.
Causes:
Changes in bone marrow such as;
1. Aplasia (bone marrow failure)
2. Dyshemopoeisis (disorder in formation of blood cells)
Changes in circulation
1. Hemolysis (reduced life span of red blood cells e.g. In malaria)
2. Acute hemorrhage
Symptoms of anemia:
Pallor of skin
Dyspnoea specially on exertion
Lethargy
Pain and numbness of lower limbs
The most common type of anemia found worldwide is the iron deficiency anemia, the causes for iron deficiency anemia include;
1. poor nutrition
2. poverty
3. multiple pregnancies
4. malabsorption
It is also the most common type of anemia affecting the pregnant women
Red cell indices:
MCV (mean cell volume)
MCV demonstrates the normal size of a red blood cell. In case of Iron deficiency anemia the size of a cell is reduced which means a low MCV (microcytic picture)
While in Megaloblastic anemia the MCV is increased (macrocytic)
Normal value: 80 to 10O fL
MCH (mean cell hemoglobin)
MCH is the total amount of hemoglobin in RBC’S
In case of Iron deficiency anemia the mean cell Hb is reduced along with a low MCV (microcytic picture)
While in Megaloblastic anemia the MCH remains low or can be normal
Normal value: 27 to 34 pg
MCHC (mean cell hemoglobin concentration)
It is the concentration of Hb in the red blood cell
Normal values: 33 to 36 g/dl
PCV (packed cell volume)
It is the percentage of blood volume occupied by red blood cells
Normal values:
Male: 40 to 54 %
Female: 37 to 47 %
WBC count (leucocytes)
The total number of WBC’s found in one liter of blood
The function of WBC’S is to provide defense to the body against bacteria, virus and other organisms and also provide immunity to the body.
The normal value of WBC count is same in both male and female that is;
4,000 to 11,000 / L
The value of leucocytes increases above normal level that is more than 11,000/l in the following conditions:
Acute infection
T.B
Bacterial infections
Viral infections
Inflammation
when the value is very high that is near or above 20,000 than the patient should be investigated further for:
Leukemia (blood cancer)
A decrease in the number of leucocytes occurs in case of typhoid and diabetes mellitus
Platelet count
Platelets are the blood cells which help in forming the clot after injury or bleeding.
Their value is same in both male and female that is;
150,000 to 4, 00000/ L
Whenever the value of platelet is decreased below normal (thrombocytopenia), blood looses its ability to clot and bleeding occurs from orifices, it occurs in following conditions;
Liver diseases such as; Hepatitis and Chronic liver disease
Clotting disorders
The value of platelets increases in certain conditions such as;
Disseminated intravascular coagulation (DIC)
Drug reactions
ESR is another common investigation usually requested along with Blood CP, details are given below:
ESR (erythrocyte sedimentation rate)
ESR is a routine investigation which is mostly requested along with blood C P, it is a non specific investigation because it is not specific for any disease/ condition. The value of ESR is raised in any type of infection, tissue damage or trauma in the body
Serial ESR examinations are performed to assess the progress of disease.
Its value increases in all inflammatory conditions;
Tissue damage
Pregnancy
T.B
Typhoid
Arthritis
Acute infections
Fractures
The value of ESR decreases in;
Sickle cell anemia ( it is a heredity disease in which bed blood cells become curve shaped and so cannot pass through capillaries and carry oxygen)
Polycythemia (increase in number of red blood cells)
Normal value:
Male: 4 to 10 mm/ hour
Female: 6 to 12 mm/ hour