ASCP MLS Exam: Practice Questions

Description

Prepare for the ASCP BOC Medical Laboratory Scientist (MLS) exam with this unofficial book of practice questions. This book contains 400 multiple-choice practice questions , including questions with color images. The questions are divided into the seven content areas of the ASCP MLS exam: 1. Blood banking 2. Urinalysis and other body fluids 3. Chemistry 4. Hematology 5. Immunology 6. Microbiology 7. Laboratory operations Answers are at the end of each section, along with explanations. This book is also useful for preparing for the ASCP MLT exam. The questions are similar but not identical to the questions in the "ASCP MLT Exam: Practice Questions" book, giving ASCP MLT candidates even more opportunity to practice. SAMPLE QUESTIONS To give you a preview, here are five sample questions from the book: 1) BLOOD BANKING Antibodies from which antigen system do NOT cause hemolytic disease of the fetus and newborn? a. ABO b. Duffy c. Lewis d. RhD Answer: c. Lewis Hemolytic disease of the fetus and newborn (HDFN) is a condition where a pregnant woman's antibodies destroy her baby's red blood cells, causing the baby to develop anemia. Many antibodies can cause HDFN, including those from the ABO, RhD, and Duffy blood group systems. Lewis system antibodies, on the other hand, are common in pregnant women and do not cause HDFN. 2) URINALYSIS AND OTHER BODY FLUIDS Which term means the abnormal build-up of fluid in the peritoneal cavity? a. Ascites b. Cellulitis c. Edema d. Paracentesis Answer: a. Ascites Ascites is the accumulation of fluid in the peritoneal cavity (abdomen), causing abdominal swelling. 3) HEMATOLOGY Which term is a condition where red blood cells are of different sizes? a. Anisocytosis b. Erythrocytosis c. Heterocytosis d. Pinocytosis Answer: a. Anisocytosis Anisocytosis is the term for red blood cells that are unequal in size. Normal red blood cells are generally the same size. 4) IMMUNOLOGY What is the main molecule responsible for transplant rejection? a. Interferon alpha b. Interleukin-8 c. Major histocompatibility complex d. Transforming growth factor alpha Answer: c. Major histocompatibility complex The major histocompatibility complex (MHC) is the main molecule responsible for transplant rejection. When an organ or tissue is transplanted, the recipient's immune system recognizes the MHC molecules on the cells of the donor tissue as foreign. This recognition triggers an immune response, leading to the rejection of the transplanted organ or tissue. 5) MICROBIOLOGY Which three bacteria most often cause conjunctivitis in children? a. Haemophilus influenzae, Streptococcus pneumoniae, and Moraxella catarrhalis b. Klebsiella pneumoniae, Salmonella enterica, and Neisseria gonorrhea c. Mycobacterium tuberculosis, Escherichia coli, and Pseudomonas aeruginosa d. Staphylococcus aureus, Listeria monocytogenes, and Enterococcus faecalis Answer: a. Haemophilus influenzae, Streptococcus pneumoniae, and Moraxella catarrhalis The most common causes of bacterial conjunctivitis in children are Haemophilus influenzae, Streptococcus pneumoniae, and Moraxella catarrhalis. 6) LABORATORY OPERATIONS A lab assistant makes a 1/6 dilution of serum in water. The assistant then performs a glucose test on the diluted serum. The result is 72 mg/dL. What result should the lab assistant report to the doctor? a. 12 mg/dL b. 72 mg/dL c. 432 mg/dL d. 720 mg/dL Answer: c. 432 mg/dL The serum has been diluted by a factor of 6. Therefore, you need to multiply the glucose result by 6 to get the true result: 72 × 6 = 432 .