The laboratory isolated a strain of Staphylococcus aureus wh…
The laboratory isolated a strain of Staphylococcus aureus which demonstrated the following antimicrobial susceptibility pattern: Penicillin R Erythomycin R Cefazoin R Cephalothin R Oxacillin R Vancomycin I The clinical laboratory scientist should:
Read DetailsYou are running an enzyme assay that uses the co-enzyme NAD….
You are running an enzyme assay that uses the co-enzyme NAD. Its activity is measured in terms of NADH produced. You have obtained the following data: Total volume of assay is 3.0 mL Sample volume is 0.5 mL Absorbance change 7 minutes is 0.350 The molecular extinction coefficient of NADH is 6.22 x 10-3 L/μmol-1/cm-1 and the light path is 1 cm. Calculate the enzyme activity in IU/L.
Read DetailsAfter performing and AB screen and detection, you suspect th…
After performing and AB screen and detection, you suspect that the patient has and Anti-C. You counted 6 cells that had the C antigen that yielded an agglutination with the patient serum and 11 cells that did not have the C antigen that did not yield an agglutination. You tested 19 cells altogether. What is the p-value for the patient and is the identification valid based on the p-value?
Read DetailsA bone marrow aspiration performed on a 65-year-old female i…
A bone marrow aspiration performed on a 65-year-old female is 70% cellular with a 1.5:1 myeloid to erythroid ratio and 4% blasts. There are megaloblastoid changes in the erythrocytic precursors. Granulocyte precursors show hypogranularity and increased karyorrhexis. Vitamin B12 (cobalamin) and folic acid levels are within reference range. Which of the following findings correlates with the suspected diagnosis?
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