Clinical Chemistry Flashcards
- Which of the following scenarios is/are NOT considered as a correct way to identify a patient?
I. “Are you Yelan?”, phlebotomist Topaz asked.
II. Cyno asks the nurse in charge the name of an unconscious patient and at the same time checks the ID band on the patient’s wrist
III. “May I ask for your name, Sir?”. “I’m Bronya.”
IV. Kafka looks at the patient, then the requisition slip, then proceeds to blood extraction.
a. I, II, IV
Laboratories should monitor and track pre-analytical indicators of quality to develop strategies to identity root causes of error and develop counter measures. Examples of pre-analytical quality indicators include:
d. Rate of an inaccurate test order entry into the
laboratory information system
How will you correct this venipuncture error?
Slowly pull the needle backwards until blood flow
resumes.
Which of the following should be avoided when extracting blood?
I. avoid areas with hematoma
II. extract above the IV line
III. extract from an area on the opposite side of the mastectomy
IV. draw blood from a standing patient
-II, IV
Which of the following statements incorrectly describes the procedure for specimen labeling?
Labelling could be done before collection
After a difficult venipuncture requiring prolonged application of the tourniquet, the serum potassium was found to be 6.8 mEg/L (6.8 mmol/L). The best course of actions is to:
Repeat the test using freshly drawn serum
In a specimen collected for plasma glucose analysis, sodium fluoride,
Inhibits glycolysis
The preparation of a patient for standard glucose tolerance testing should include:
A high carbohydrate diet for 3 days
A healthy person with a blood glucose of 80 mg/Dl (4.4 mmol/L) would have a simultaneously determined cerebrospinal fluid value of:
50 mg/dL (2.3 mmol/L)
Which one of the following values obtained during a glucose tolerance test are diagnostic of diabetes mellitus?
Fasting plasma glucose = 126 mg/dL (6.9 mmol/L)
In protein electrophoresis, when the sample is placed in an electric field connected to a buffer of 8.6, all of the proteins:
Have a negative charge
The above serum protein electrophoresis pattern is consistent with:
Chronic Inflammation
In familial hypercholesterolemia, the hallmark finding is an elevation of
Low-density lipoproteins
A 13-year old girl with hyperlipoproteinemia and lipase deficiency has the following lipid profile: Cholesterol :300 mg/dL
LDL: increased
HDI:decreased
Triglycerides: 200 mg/dL
Chylomicrons: present
A serum specimen from this patient that was refrigerated overnight would most likely be:
Creamy layer over cloudy serum
Transportation of 60-75% of plasma cholesterol is performed by:
Low-density lipoproteins
