Diagnostic Testing and Lab Procedures Flashcards
6 cards from real RMA practice questions. Tap to flip, then mark Knew It or Still Learning — missed cards come back until you master them.
Read the first 6 Diagnostic Testing and Lab Procedures flashcards as text
Which type of microscopy uses ultraviolet light and fluorescent dyes to make specific organisms or cellular components glow brightly against a dark background?
Answer: Fluorescence microscopy
Fluorescence microscopy uses ultraviolet or near-UV light to excite fluorescent dyes (fluorophores) or naturally fluorescent compounds, causing tagged structures to emit visible light and appear luminous against a dark background.
A reagent strip used for urine testing shows a color change indicating protein in the urine. Which medical term describes the presence of abnormal amounts of protein in urine?
Answer: Proteinuria
Proteinuria (also called albuminuria when specifically referring to albumin) is the term for abnormal protein excretion in urine, which can indicate kidney disease, heart failure, hypertension, or diabetes.
When centrifuging a urine sample for microscopic examination, which layer is examined and how is it prepared?
Answer: The supernatant is removed, the pellet is resuspended in residual urine, and a drop is placed on a slide
After centrifugation, the supernatant is decanted, the sediment (pellet) is resuspended in the small volume of remaining urine, and a drop of resuspended sediment is transferred to a slide for microscopic examination.
Which fasting blood glucose level is used by the American Diabetes Association (ADA) to define a diagnosis of diabetes mellitus?
Answer: Fasting glucose ≥ 126 mg/dL on two separate occasions
The ADA defines diabetes as a fasting plasma glucose of 126 mg/dL or higher confirmed on two separate test occasions (or a single test if classic hyperglycemic symptoms and a random glucose ≥ 200 mg/dL are present).
A provider orders a 'type and screen' for a pre-operative patient. What does this test determine?
Answer: ABO blood type, Rh factor, and presence of unexpected antibodies
A type and screen determines the patient's ABO blood group and Rh factor (typing) and screens for clinically significant unexpected red blood cell antibodies that could cause a transfusion reaction.
Which quality control (QC) action must be performed when a new bottle of urine dipstick reagent strips is opened?
Answer: Run both normal and abnormal controls on the new strips before using for patient testing
CLIA and laboratory accreditation standards require running both positive and negative (or normal and abnormal) controls when opening a new lot of reagent strips to verify the strips are performing accurately before patient results are reported.