Prozone reaction - Study guides, Class notes & Summaries

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...

MLT ASCP Practice Test Questions board practice Exam with complete solutions 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 fa...

PIONEER ISBB PART 2200-499/uL The CD4+ T lymphocyte count in Stage III HIV infection is: Inhibition A type of immunofluorescent assay that is a blocking test wherein the antigen is first exposed to unlabeled antibody, then to labeled antibody: Type I Hives and itching are examples of what type of hypersensitivity reaction? Early Acute Infection Interpret the following laboratory results: HBsAg = reactive HBeAg = reactive Anti-HBc = nonreactive Anti-HBe = nonreactive ...

ASCP MLS practice test review Questions and correctly evaluated answers 2023/2024 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 ASO titer and Anti...

MLT ASCP Practice Test Questions board practice with answers already solved 2023B; 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 ...

ISBB questions.Upon adding the indicator system in a T. pallidum complement fixation test, hemolysis was observed. This indicates Negative reaction, T. pallidum antibody absent A patient being positive for the Vi antigen in Widal test means: 1. Patient is also positive for envelope antigen 2. Patient is carrier of S. typhi 3. Patient is positive for the somatic antigen 4. Patient has an active typhoid fever Patient is also positive for envelope antigen and a carrier of The f...

AAB MT IMMUNOLOGY REVIEWED TEST 2023/2024 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...

Precipitation correct answers soluble antigen and soluble antibody react to form an insoluble product (precipitate), less sensitive than agglutination Zone of equivalence correct answers maximum precipitation occurs when concentrations of antigen and antibody are equal (section B) Prozone correct answers Excess antibody is present -Antigen and antibody do NOT form precipitates, complexes remain soluble -False NEGATIVE results, dilute sample, retest or repeat in 1-2 weeks -Serial dilutio...

The Occupation Safety and Health Administration does not require the routine use of gloves by phlebotomists working with healthy prescreened donors or changing unsoiled gloves between donors. ANS: T Because the risk of exposure is minimal with blood donors, the Occupation Safety and Health Administration (OSHA) does not require gloves, or if gloves are worn, OSHA does not require that unsoiled gloves be changed between donors. DIF: Level 1 REF: p. 15 2. All accidents, even minor ones, mu...

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...