Explain the different interpretations offered by these two tests.

1. A semen analysis on a vasovasostomy patient has a normal sperm concentration; however, motility is decreased, and clumping is observed on the wet preparation. a. Explain the possible connection between these observations and the patient’s recent surgery. b. What tests could be performed to further evaluate the patient’s infertility? c. Briefly explain the different […]

Describe the tubes into which the fluid would be routinely placed.

1. A 50-year-old man presents in the emergency department with severe pain and swelling in the right knee. Arthrocentesis is performed and 20 mL of milky synovial fluid is collected. The physician orders a Gram stain, culture, and crystal examination of the fluid, as well as a serum uric acid. She requests that the synovial […]

Name an additional test that could provide more diagnostic information.

1. Microscopic screening of a stool from a patient exhibiting prolonged diarrhea shows increased fecal neutrophils and normal qualitative fecal fats and meat fibers. a. What type of diarrhea do these results suggest? b. Name an additional test that could provide more diagnostic information. c. Name one probable result for this test and one improbable […]

Describe the appearance of the stool specimens if steatorrhea is present.

1. Laboratory studies are being performed on a 5-year-old boy to determine whether there is a metabolic reason for his continued failure to gain weight. In addition to having blood drawn, the patient has a sweat chloride collected, provides a random stool sample, and is asked to collect a 72-hour stool sample. a. How can […]

What is the possible nonpathologic cause of the unexpected results for Patient #1? Patient #2? Patient #3?

1. A physician’s office laboratory is experiencing inconsistencies in the results of patient-collected specimens for FOBT. Patients are instructed to submit samples from two areas of three different stools. Positive and negative controls are producing satisfactory results. Patient #1 is a 30- year-old woman taking over-the-counter medications for gastric reflux who has reported passing frequent, […]