Mlt ascp stuvia 2023 Study guides, Class notes & Summaries

If the dilution is 1:100, and the average platelet count from both sides of the hemacytometer counting chamber in 2 mm2 is 68, what is the calculated platelet count? A. 680,000/mm3 B. 6,800/mm3 C. 68,000/mm3 D. 680/mm3 E. 34,000/mm3 - ANSWER-C; A simple way to calculate platelet counts on the hemacytometer is to multiply the average platelet count between the two sides of the chamber by 1,000. In this case 68 x 1,000 = 68,000 platelets. The longer derivation is as follows: The standard ...

ACD/CPD/CPD2 - ANSWER-21 days CPDA-1 - ANSWER-35 days Infants HDFN from ABO - ANSWER-Spherocytes 1st pregnancy O mother Permanent deferral - ANSWER-Hepatitis after 11 HIV T. Cruzi CJD 1 unit or PRBC - ANSWER-Raises hemoglobin 1g and hematocrit 3% Leukoreduced RBCs - ANSWER-Less than 5 x 10^6 to prevent febrile non hemolytic reactions Cryoprecipitate - ANSWER-Factor 8 vWF Fibrinogen For DIC 6 hours Platelets 1unit - ANSWER- Irradiated blood - ANSWER-Prevent ...

Patients with antibody to the following antigen are immune to Hepatitis B: A: Core Antigen B: Surface antigen C: e antigen D: Delta antigen **This is a Level 4 Question** - ANSWER-B Which of the following organisms is BEST VISUALIZED by use of a darkfield microscope? A: Poxviridae B: Entamoeba C: Borrelia D: Streptococcus **This is a Level 5 Question** - ANSWER-C What is the MOST LIKELY cause of the ABO discrepancy when the following results were obtained from a first-tim...

Nephelometry is based on the principle of: - ANSWER-Turbidity resulting from specific antigen-coated latex particles agglutinated by corresponding antibody Which of the following can cause hemolysis and perhaps result in recollection of the specimen? - ANSWER-Pushing the plunger of a syringe when transferring blood into vacuum tubes. A manual white blood cell count was performed by the hematology technologist. The cell counts for both sides were 99 and 164, respectively. All nine large squ...

B; The correct answer for this question is 1300 mg/dL. The laboratorian performed a 1:4 dilution by adding 0.25 mL (or 250 microliters) of patient sample to 750 microliters of diluent. This creates a total volume of 1000 microliters. So, the patient sample is 250 microliters of the 1000 microliter mixed sample, or a ratio of 1:4. Therefore, the result given by the chemistry analyzer must be multiplied by a dilution factor of 4. 325 mg/dL x 4 = 1300 mg/dL. - ANSWER-After experiencing extreme fat...

Standard precautions apply to all of the following except: a. Blood b. Cerebrospinal fluid c. Semen d. Concentrated acids - ANSWER-d. Concentrated acids The most important practice in preventing the spread of disease is: a. Wearing masks during patient contact b. Proper hand washing c. Wearing disposable laboratory coats d. Identifying specimens from known or suspected HIV- and HBV-infected patients with a red label - ANSWER-b. Proper hand washing The appropriate dilution of bleach...

The light-colored zone adjacent to the nucleus in a plasmacyte is the: A. ribosome B. chromatin C. mitochondria D. Golgi area - ANSWER-D. Golgi area The majority of the iron in an adult is found as a constituent of: A. hemoglobin B. hemosiderin C. myoglobin D. transferrin - ANSWER-A. hemoglobin The main function of the hexose monophosphate shunt in the erythrocyte is to: A. reglate the level of 2,3-DPG B. provide reduced glutathione to prevent oxidation of hemoglobin C. pr...

According to AABB Standards, which of the following allogenic donors may be accepted as a blood donor? - ANSWER-Spontaneous abortion at 2 months of pregnancy, 3 months ago. Which of the following is the correct storage temperature for the component listed? - ANSWER-Fresh Frozen Plasma (FFP), -20 degrees Celsius. Anti-C, Anti-D, Anti-E, Anti-c, anti-e are all positive. Which of the following is a possible genotype for an individual whose red cells gives the reaction above? - ANSWER-R1R2. ...