Body Fluids Exam 2 Flashcards
(38 cards)
What makes synovial fluid so viscous?
(a) Lubricin
(b) Hyaluronan
(c) Glucose
(d) Type A Synoviocytes
(b) Hyaluronan
How long should a patient fast prior to an arthrocentesis if glucose testing is to be done on synovial fluid?
(a) 1 hour
(b) 3 hours
(c) 6 hours
(d) 8 hours
(c) 6 hours
A synovial fluid was received into the lab for crystal analysis. The tech working placed the sample into an oxalate tube prior to crystal analysis. While looking at the sample using compensated polar microscopy, the tech saw crystals present. Can this result be reported? Why or why not?
(a) Yes it can, the tech followed the correct procedure for crystal analysis
(b) Yes it can, but the result needs a comment that an oxalate tube was used
(c) No it cannot, the sample should have been placed in a lithium heparin tube instead
(d) No it cannot, the sample should have been placed in a liquid EDTA tube instead
(d) No it cannot, the sample should have been placed in a liquid EDTA tube instead
Pick the color/clarity results that best describe a normal synovial fluid.
(a) Pale Yellow/Slightly Cloudy
(b) Pale Yellow/Cloudy
(c) Colorless/Slightly Cloudy
(d) Colorless/Clear
(d) Colorless/Clear
What is added to synovial fluid samples prior to analysis so that it is less viscous?
(a) Saline
(b) Sterile Water
(c) Acetic Acid
(d) Hyaluronidase
(d) Hyaluronidase
What is the predominant cell present in a normal synovial fluid sample?
(a) Neutrophils
(b) Lymphocytes
(c) Monocytes/Macrophages
(d) Synoviocytes
(c) Monocytes/Macrophages
Select the correct statement(s) regarding birefringence.
(a) A crystal that is positively birefringent will be yellow when its longitudinal axis is parallel to the slow axis of the red compensator plate
(b) A crystal that is positively birefringent will be blue when its longitudinal axis is parallel to the slow axis of the red compensator plate
(c) A crystal that is negatively birefringent will be yellow when its longitudinal axis is parallel to the slow axis of the red compensator plate
(d) A crystal that is negatively birefringent will be blue when its longitudinal axis is parallel to the slow axis of the red compensator plate
(b) A crystal that is positively birefringent will be blue when its longitudinal axis is parallel to the slow axis of the red compensator plate
(c) A crystal that is negatively birefringent will be yellow when its longitudinal axis is parallel to the slow axis of the red compensator plate
What best describes the morphology of a calcium pyrophosphate dihydrate crystal under polarized microscopy?
(a) Thin, needlelike crystal that may be found intracellularly
(b) Small, blunt ends, rhomboid in shape
(c) Flat, rectangular plates with notched corners
(d) Irregular, jagged/serrated edges, look broken
(b) Small, blunt ends, rhomboid in shape
Identify the following crystals
(a) Monosodium urate crystals
(b) Calcium pryrophosphate dihydrate crystals
(c) Cholesterol crystals
(d) Corticosteroid crystals
(c) Cholesterol crystals
Select the normal color/consistency of stool.
(a) Black, formed
(b) Brown, soft
(c) Black, hard
(d) Brown, formed
(d) Brown, formed
What is the term for fat in stool?
(a) Melena
(b) Steatorrhea
(c) Diarrhea
(d) Creatorrhea
(b) Steatorrhea
Fill in the blank for the guaiac-based fecal occult blood test principle (gFOBT)
(a) Psuedoperoxidase/Peroxidase
(b) Hemoglobin antibody complexes
(c) Un-degraded hemoglobin
(d) Sodium hydroxide
(a) Psuedoperoxidase/Peroxidase
Interpret the following guaiac-based fecal occult blood test. Assume collection instructions were completed exactly as directed.
(a) Negative
(b) Positive
(c) Invalid
(b) Positive
If a patient is experiencing an upper GI bleed, what color would you expect the patient’s stool to be? Select all that apply
(a) Bright Red
(b) Black
(c) Mahogany
(d) Green
(b) Black
You receive a bright red stool specimen in the lab from a 1 day old infant. The physician has ordered an Apt test. After completing the test, the tube containing the specimen turns yellow after 1 minute. What does this result mean?
(a) Only fetal hemoglobin (HbF) is present in the sample
(b) Maternal hemoglobin (HbA) is present in the sample
(c) The results are invalid and need to be repeated
(b) Maternal hemoglobin (HbA) is present in the sample
What are the patient requirements for fat intake when completing a quantitative fecal fat test?
(a) Limit fat intake to <100 grams/day
(b) Limit fat intake to 100-150 grams/day
(c) Limit fat intake to 150-200 grams/day
(d) Limit fat intake to 200-250 grams/day
(b) Limit fat intake to 100-150 grams/day
What is the main advantage of using hydrogen nuclear magnetic resonance spectroscopy over other testing methods for quantitative fecal fat testing?
(a) It is the reference method
(b) Only 80% of fecal lipids are recovered
(c) It is much faster than other methods
(d) The patient is not required to follow a specific diet prior to sample collection
(c) It is much faster than other methods
What is the most diagnostic method of detecting fecal carbohydrates?
(a) Oral Tolerance Tests
(b) pH
(c) Histochemical Examination
(d) Xylose absorbance test
(c) Histochemical Examination
Interpret the following fecal WBC slide.
(a) Negative, no fecal WBCs present
(b) Positive, fecal WBC’s present
(a) Negative, no fecal WBCs present
An amniotic fluid sample is sent down to the lab in a clear plastic container. Bilirubin testing has been ordered. The lab assistant spins down the sample in the centrifuge at a high speed. The medical laboratory scientist performing the test finds that the bilirubin levels are low. Can this result be reported? Assume the testing was done correctly per the procedure.
(a) Yes, as long as the medical laboratory scientists performed the test according to procedure, the results can be reported.
(b) No, the results cannot be reported as the sample was spun at high speed. A low speed should have been used instead to help with the recovery of fetal cells.
(c) No, the results cannot be reported as the sample was placed into a clear container. A brown container should have been used so that the sample was not exposed to light prior to testing.
(c) No, the results cannot be reported as the sample was placed into a clear container. A brown container should have been used so that the sample was not exposed to light prior to testing.
What test can be used to distinguish urine from amniotic fluid?
(a) Fern Testing
(b) AmniSure
(c) Color
(d) Fetal Fibronectin
(a) Fern Testing
Which amniotic fluid tests are affected by blood? Select all that apply.
(a) Lecithin/Sphingomyelin (L/S) Ratio
(b) Phosphotidylglycerol
(c) Lamellar Body Count
(d) Bilirubin (ΔA450)
(a) Lecithin/Sphingomyelin (L/S) Ratio
(c) Lamellar Body Count
(d) Bilirubin (ΔA450)
What is the maximum absorbance of bilirubin?
(a) 350 nm
(b) 400 nm
(c) 450 nm
(d) 540 nm
(c) 450 nm
When do lamellar bodies begin to be produced within fetal lungs?
(a) 16-20 weeks gestation
(b) 20-24 weeks gestation
(c) 24-28 weeks gestation
(d) After 28 weeks gestation
(b) 20-24 weeks gestation
