Sentence OutlineTopic: Relevance of manual computation in counting blood type resultsThesis statement: Manual computation is relevant in counting white blood cell in patient.

I. IntroductionII. Overview of the white blood cell countA. The importance of white blood cell is to play a role in defending the host against infections and other insults. (Test explanation and related physiology)1. There are five subtypes of white blood cells, and each serves a different function, which means it's useful to know the count for all of them.a) Lymphocytes use antibodies to attack certain viruses and bacteriab) Neutrophils are especially good at combating bacteria.c) Eosinophils target parasites and certain infections.d) Monocytes respond to inflammation and replenish white blood cells within bodily tissue.e) Basophils, the rarest of the subtypes, attack certain parasites.

B. Interfering factors that can lead to increase and decrease of white blood cells in patients may vary the diagnostic result. (Interfering factors)1. Physical activity and stress may cause an increase in WBC and differential values.2. Pregnancy (final month) and labor may cause increased WBC levels.3. Patients who have had a splenectomy have a persistent, mild elevation of WBC count.4. Drugs that may cause increased WBC levels include adrenaline, allopurinol, aspirin, chloroform, epinephrine, heparin, quinine, steroids, and triamterine.5. Drugs that may cause decreased WBC levels include antibiotics, anticonvulsants, antihistamines, antimetabolites, antithyroid, drugs, arsenicals, barbiturates, chemotherapeutic agents, diuretics, and sulfonamides.

C. Procedures that may take place in drawing white blood cell count in patients. (Procedure and patient care)1. Before the test is takena) Explain the procedure to the patient.b) Tell the patient that no fasting is required.2. During the actual test is takena) Collect approximately 5 to 7 ml of venous blood in a lavender-top tube.3. After the test is takena) Apply pressure to the venipuncture site.

D. The meaning of an increase and decrease white blood cell count in patients test results explains the diagnostic illness of the patient. (Test results and clinical significance)1. Abnormal findingsa) Increased WBC countb) Decreased WBC countc) Increased and decreased differential count

III. There are advantages and disadvantages of manual method in WBC countA. When a leukocyte count is extremely low or high, it may be necessary to perform manual count because of loss of instrument linearity (capability to count cells accurately) at the extreme ends of the spectrum.B. Other samples may require manual cell counting including those with abnormal proteins, clumped platelets, or antibody elements in the plasma that interfere with an instruments ability to count leukocytes.C. For some laboratories automated method may be evaluated by manual methods, although automated leukocyte and erythrocyte counts should be evaluated with single-channel automated cell counter as a backup rather than a manual method. D. Extremely abnormal leukocytes, such as those seen in leukemia, may not, in some cases, be accurately differentiated by automated methods.

IV. Implications of using manual computation in WBC count

V. Conclusion

VI. Reference list

VII. Appendixes