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| | Complete Blood Count -- CBC | |
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عدد المساهمات : 2464 نقاط : 4252 السٌّمعَة : 9 الجنس : علم بلدك : تاريخ الميلاد : 03/04/1950 تاريخ التسجيل : 30/07/2012 العمر : 74 الموقع : السودان - سنار العمل/الترفيه : طبيب عمومى وموجات صوتية الساعة الان : دعائي :
| | | | د.كمال سيد Admin
عدد المساهمات : 2464 نقاط : 4252 السٌّمعَة : 9 الجنس : علم بلدك : تاريخ الميلاد : 03/04/1950 تاريخ التسجيل : 30/07/2012 العمر : 74 الموقع : السودان - سنار العمل/الترفيه : طبيب عمومى وموجات صوتية الساعة الان : دعائي :
| موضوع: رد: Complete Blood Count -- CBC السبت مايو 04, 2019 10:46 pm | |
| [size=34]Complete Blood Count (CBC) / Normal Values
Definition A complete blood count (CBC) is a series of tests used to evaluate the composition and concentration of the cellular components of blood
It measures the following
The number of red blood cells (RBCs) The number of white blood cells (WBCs) The total amount of hemoglobin in the blood The fraction of the blood composed of red blood cells (hematocrit) The mean corpuscular volume (MCV) — the size of the red blood cells CBC also includes information about the red blood cells that is calculated from the other measurements: MCH (mean corpuscular hemoglobin) MCHC (mean corpuscular hemoglobin concentration) The platelet count is also usually included in the CBC
Purpose
The CBC provides valuable information about the blood and to some extent the bone marrow, which is the blood-forming tissue. The CBC is used for the following purposes
as a preoperative test to ensure both adequate oxygen carrying capacity and hemostasis to identify persons who may have an infection to diagnose anemia to identify acute and chronic illness, bleeding tendencies, and white blood cell disorders such as leukemia to monitor treatment for anemia and other blood diseases to determine the effects of chemotherapy and radiation therapy on blood cell production
Preparation
There is no special preparation needed
How the Test is Performed
Blood is drawn from a vein, usually from the inside of the elbow or the back of the hand. The puncture site is cleaned with antiseptic. An elastic band is placed around the upper arm to apply pressure and cause the vein to swell with blood
A needle is inserted into the vein, and the blood is collected in an air-tight vial or a syringe. During the procedure, the band is removed to restore circulation. Once the blood has been collected, the needle is removed, and the puncture site is covered to stop any bleeding In infants or young children, the area is cleansed with antiseptic and punctured with a sharp needle or a lancet. The blood may be collected in a pipette (small glass tube), on a slide, onto a test strip, or into a small container. A bandage may be applied to the puncture site if there is any bleeding
Normal Values
TEST NORMAL VALUES ........................................................................................... ............................................................................................ Leukocyte (White Blood Cell) X1000 cells/mm³ (µL) ................ Birth 9.0-30.0 24hours 9.4-34.0 1month 5.0-19.5 1-3years 6.0-17.5 4-7years 5.5-15.5 8-13years 4.5-13.5 Adult 4.5-11.0 ........................................................................... .......................................................................... Neutrophils Bands 3-5% (total WBC count) ............................. Segs 54-62% Lymphocytes 25-33% Monocytes 3-7% Eosinophils 1-3% Basophils 0-0.75% ....................................................................................... ....................................................................................... Erythrocytes (Red Blood Cells) ......................................... Cord 3.9-5.5 million/mm³ 1-3days 4.0-6.6 million/mm³ 1week 3.9-6.3 million/mm³ 2weeks 3.6-6.2 million/mm³ 1month 3.0-5.4 million/mm³ 2months 2.7-4.9 million/mm³ 3-6months 3.1-4.5 million/mm³ 0.5-2years 3.7-5.3 million/mm³ 2-6years 3.9-5.3 million/mm³ 6-12years 4.0-5.2 million/mm³ 12-18years (male) 4.5-5.3 million/mm³ 12-18years (female) 4.1-5.1 million/mm³ ................................................................................................. ................................................................................................ Hemoglobin ..................... 1-3days 14.5-22.5 g/dL 2months 9.0-14.0 g/dL 6-12years 11.5-15.5 g/dL 12-18years (male) 13.0-16.0 g/dL 12-18female) 12.0-16.0g/dL ............................................................................................. ............................................................................................. Hematocrit ..................... 1day 48-69% 2days 48-75% 3days 44-72% 2months 28-42% 6-12years 35-45% 12-18years (male) 37-49% 12-18years (female) 36-46% ............................................................................................ ............................................................................................ Mean Corpuscular Volume (MCV) ................... 1-3days 95-121µm³ 0.5-2years 70-86 µm³ 6-12years 77-95 µm³ 12-18years (male) 78-98 µm³ 12-18years (female) 78-102 µm³ ............................................................................................... ............................................................................................... Mean Corpuscular Hemoglobin (MCH) ..................... Birth 31-37 pg/cell 1-3days 31-37 pg/cell 1week-1 month 28-40 pg/cell 2months 26-34 pg/cell 3-6months 25-35 pg/cell 0.5-2years 23-31 pg/cell 2-6years 24-30 pg/cell 6-12years 25-33 pg/cell 12-18years 25-35 pg/cell ....................................................................................................... ....................................................................................................... Mean Corpuscular Hemoglobin Concentration (MCHC) ................... Birth 30-36 g Hg/dL RBC 1-3days 29-37 g Hg/dL RBC 1-2weeks 28-38 g Hg/dL RBC 1-2months 29-37 g Hg/dL RBC 3months -2 years 30-36 g Hg/dL RBC 2-18years 31-37 g Hg/dL RBC ................................................................................................. ................................................................................................. Reticulocyte Count ................. Infants 2-5% of RBCs Children 0.5-4% of RBCs 12-18years (male) 0.5-1% of RBCs 12-18years (female) 0.5-2.5% of RBCs ................................................................................................ ................................................................................................ Platelet Count .................. Birth -1 week 84,000-478,000/mm³ Thereafter 150,000-400,000/mm³ ............................................................................................... .............................................................................................. ERYTHROCYTE SEDIMENTATION RATE (ESR) ........................ TEST NORMAL VALUE Westergren Child 0-10 mm/hour Adult (male) 0-15 mm/hour Adult (female) 0-20 mm/hour
Wintrobe Child 0-13 mm/hour Adult (male) 0-9 mm/hour Adult (female) 0-20 mm/hour
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What Abnormal Results Mean
High numbers of RBCs may indicate
Low oxygen tension in the blood Congenital heart disease Cor pulmonale Pulmonary fibrosis Polycythemia vera Dehydration (such as from severe diarrhea) Renal (kidney) disease with high erythropoietin production
Low numbers of RBCs may indicate
Blood loss Anemia (various types) Hemorrhage Bone marrow failure (for example, from radiation, toxin, fibrosis, tumor) Erythropoietin deficiency (secondary to renal disease) Hemolysis (RBC destruction) Leukemia Multiple myeloma Malnutrition (nutritional deficiencies of iron, folate, vitamin B12, or vitamin B6)
Low numbers of WBCs (leukopenia) may indicate
Bone marrow failure (for example, due to infection, tumor or fibrosis) Presence of cytotoxic substance Autoimmune/collagen-vascular diseases (such as lupus erythematosus) Disease of the liver or spleen Radiation exposure
High numbers of WBCs (leukocytosis) may indicate
Infectious diseases Inflammatory disease (such as rheumatoid arthritis or allergy) Leukemia Severe emotional or physical stress Tissue damage (SUCH AS burns)
Low hematocrit may indicate
Anemia (various types) Blood loss (hemorrhage) Bone marrow failure (for example, due to radiation, toxin, fibrosis, tumor) Hemolysis (RBC destruction) related to transfusion reaction Leukemia Malnutrition or specific nutritional deficiency Multiple myeloma Rheumatoid arthritis High hematocrit may indicate: Dehydration Burns Diarrhea Polycythemia vera Low oxygen tension (smoking, congenital heart disease, living at high altitudes)
Low hemoglobin values may indicate
Anemia (various types) Blood loss
The test may be performed under many different conditions and in the assessment of many different diseases
Resources
US National Library of Medicine and the National Institute of Health – Medline Plus Encyclopedia of Surgery Lippincott’s Review Series Pediatrics Nursing[rtl][/rtl][/size] | |
| | | د.كمال سيد Admin
عدد المساهمات : 2464 نقاط : 4252 السٌّمعَة : 9 الجنس : علم بلدك : تاريخ الميلاد : 03/04/1950 تاريخ التسجيل : 30/07/2012 العمر : 74 الموقع : السودان - سنار العمل/الترفيه : طبيب عمومى وموجات صوتية الساعة الان : دعائي :
| | | | د.كمال سيد Admin
عدد المساهمات : 2464 نقاط : 4252 السٌّمعَة : 9 الجنس : علم بلدك : تاريخ الميلاد : 03/04/1950 تاريخ التسجيل : 30/07/2012 العمر : 74 الموقع : السودان - سنار العمل/الترفيه : طبيب عمومى وموجات صوتية الساعة الان : دعائي :
| | | | د.كمال سيد Admin
عدد المساهمات : 2464 نقاط : 4252 السٌّمعَة : 9 الجنس : علم بلدك : تاريخ الميلاد : 03/04/1950 تاريخ التسجيل : 30/07/2012 العمر : 74 الموقع : السودان - سنار العمل/الترفيه : طبيب عمومى وموجات صوتية الساعة الان : دعائي :
| موضوع: رد: Complete Blood Count -- CBC السبت مايو 04, 2019 10:49 pm | |
| | |
| | | د.كمال سيد Admin
عدد المساهمات : 2464 نقاط : 4252 السٌّمعَة : 9 الجنس : علم بلدك : تاريخ الميلاد : 03/04/1950 تاريخ التسجيل : 30/07/2012 العمر : 74 الموقع : السودان - سنار العمل/الترفيه : طبيب عمومى وموجات صوتية الساعة الان : دعائي :
| موضوع: رد: Complete Blood Count -- CBC السبت مايو 04, 2019 10:50 pm | |
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