The prozone - Study guides, Class notes & Summaries

MLT ASCP PRACTICE TEST QUESTIONS BOARD PRACTICE 2023 LATEST SOLUTION UPDATE QUESTIONS AND ANSWERS 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 multipli...

Concerning antigen-antibody reactions, the prozone effect causes which of the following results? A. False positive B. False negative C. No reaction D. Mixed field reaction - correct answer B. False negative The following characteristics are applicable to Interferon-Gamma Release Assays (IGRAs) except: A. Can be used in patients with active tuberculosis disease symptoms B. Preferable for patients who have received a bacillus Calmette-Guérin (BCG) vaccination C. Can be used instea...

A 10 mL fetal maternal hemorrhage in an Rh-negative woman who delivered an Rh-positive baby means that the: a. mother's antibody screen will be positive for anti-O b. rosette test will be positive c. mother is not a candidate for Rh immune globulin d. mother should receive 2 doses of Rh immune globulin - b. The rosette screen will be positive if there is a FMH of 10 mL or more. A Kleihauer Betke or flow cytometry should be performed to quantitate the FMH and determine if additional doses...

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. - After experiencing extreme fatigue an...

MLS Study Guide Exam 2 Questions & Answers 2024/2025 Define precipitation - ANSWERSantigen-antibody complex where the antigen is free or soluble (lattice structure). Define agglutination - ANSWERSantigen-antibody complex where antigen is bound to particle or cell (insoluble). Define affinity - ANSWERSamount of initial attraction between antibody (fab site) and corresponding antigen (epitope). Define avidity - ANSWERSsum of all attractive forces between antigen and antibody. What...

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. After experiencing extreme fatigue...

c (avidity) - Answer 48. The strength of a visible reaction is known as: a) prozone reaction b) absorption c) avidity d) elution a (precipitin lines cross, forming double spurs) - Answer 49. Which of the following describes an antigen-antibody precipitation reaction of non-indentity? a) precipitin lines cross, forming double spurs b) precipitin lines fuse, forming single spur c) no precipitin lines are formed d) precipitin lines fuse, forming a single arc c (ELISA) - Answer ...

CPAP ISBB1. The production of antibodies by B cells is turned off by a. Cytotoxic T cells b. Helper T cells c. B lymphocytes d. Suppressor T cells d. Suppressor T cells 2. Which of the following cells recognize certain substances as "foreign" (nonself)? a. B lymphocytes b. T lymphocytes c. Macrophages d. Basophil a. B lymphocytes 3. One dimensional single electroimmunodiffusion is also known as a. Immunoelectrophoresis b. Counterimmunoelectrophoresis c. Radioimmunoas...

ASCP MLS Exam Study Guide What feature is most often found with patients with a splenectomy on a Wright's stained blood smear? - Howell-Jolly bodies Patients with antibody to the following antigen are immune to Hepatitis B: - Surface antigen (HbSAg) Which two of the following tests are helpful for documenting previous Streptococcal throat and skin infections: - ASO titer and Anti-DNase B In mass spectrometry, the "appearance potential" is defined as the: - Minimum energy requi...

What feature is most often found with patients with a splenectomy on a Wright's stained blood smear? - correct answer Howell-Jolly bodies Patients with antibody to the following antigen are immune to Hepatitis B: - correct answer Surface antigen (HbSAg) Which two of the following tests are helpful for documenting previous Streptococcal throat and skin infections: - correct answer ...