Upgrade to remove ads
Terms in this set (26)
A CK measurement is beyond the dynamic linear range for the instrument. The technician dilutes 1 ml of sample in 9 ml of water. The instrument now measures the diluted sample as 350 U/L. What is the CK concentration of the original sample?
3500 IU/LA 1:10 dilution was performed; therefore the dilution factor is 10. Multiply the diluted concentration by the dilution factor to get the undiluted concentration.
350 IU/L • 10 = 3500 IU/L
How many milliliters of 0.5N NaOH are required to make 100 milliliters of 0.2N NaOH?
How many ml of red blood cells would be needed to make 25 ml of a 4% red cell suspension?
If a serum sample is diluted 1:4 five times in saline, what is the final dilution factor?
What is the dilution factor if 1 ul of a protein standard is diluted with 999 ul of diluent?
Dilution=(undiluted sample)/(Total volume sample+diluent) = 1/1000
1:1,000 is the dilution; 1,000 is the dilution factor
What is the accuracy and precision represented by the below diagram?
Points are off to the side of the bullseye
Low accuracy, low precision
A new multimeter probe is being tested by your lab for electrolytes. A comparison of method study was performed and summarized in the table below using the methods' coefficient of variation. This information compares the ___________ of the new method to the old one.
Coefficient of variation=(standard deviation)/(mean)*100
Coefficient of variation evaluates how large the standard deviation is compared to the mean; it is a measure of precision
Which control run violates the 21s rule?
control run 7 exceeds +2SD
Do control runs 2-6 represent an example of a shift, trend, or none of the above?
Using the data below on a Lyme disease test, if a patient tests positive, what is the probability that they have Lyme disease?
With Lyme: pos 15, neg 1
No Lyme: pos 60, neg 1,924
Positive predictive value (PPV) = true positives/all positives
What dye-binding assay uses Coomassie brilliant blue to measure protein?
Which analytical method for uric acid uses the reduction of phosphotungstic acid as a reaction indicator?
Which portion of the graph below depicts a first order reaction?
A (the beginning)
In first order reaction, substrate concentration is low and the enzyme is in excess; rate depends on the concentration of the substrate
What is the primary reagent used for the Jaffe reaction?
Which amino acids are evaluated by testing urine for the presence of homogentisic acid?
Tyrosine and phenylalanine
A patient's glucose is measured as 365 mg/dl in whole blood. What is the equivalent concentration in serum?
Serum concentrations are 11% higher in serum than in whole blood.
365mg/dL*0.11= 40mg/dL +365= 405
Given the following lab values, what is the patient's LDL cholesterol?
Total cholesterol: 175
LDL= Total cholesterol - HDL - (triglycerides/5)
Which electrolyte is the most abundant extracellular anion?
Which two enzymatic assays exist for the analysis of glucose?
Glucose oxidase and hexokinase
A patient presents to the ER with the following laboratory results:
Sodium: 143 mEq/l
Chloride: 105 mEq/l
Bicarbonate: 19 mEq/l
BUN: 4 mg/dl
Glucose: 104 mg/dl
Osmolality: 356 mOsm/kg
What is the osmol gap?
Osmol gap = Measured osmolarity - calculated osmolality
Calculated osmolality= 2Na+(glucose/18)+(BUN/2.8)
Which analytical method is used for the analysis of individual atoms, usually used for trace metals analysis?
Atomic absorption spectroscopy
During metabolic acidosis, the lungs compensate by _______ respiration rate, _________ blood CO2
When temperature increases, what is the affinity of hemoglobin for oxygen?
This monochromator has thousands of parallel grooves it uses to separate white light into its individual wavelength components
A 64-year-old woman with COPD was admitted to the emergency department with extreme shortness of breath. She had a bluish color that was particularly pronounced on her lips and nail beds and she displayed a weak and persistent cough with diminished, but rattling breath sounds.
pCO2: 91 mmHg
pO2: 53 mmHg
HCO3-: 43 mmol/L
What type of acid/base disorder does this patient have?
pH ↓ while CO2 ↑
What is HbA1C and what is it used to evaluate?
HbA1C stands for hemoglobin A1C. It is a measure of how much hemoglobin has glucose bound to it (glycosylated). It is used to monitor long-term glucose concentrations.
THIS SET IS OFTEN IN FOLDERS WITH...
Clinical Chemistry I: Quiz 7-8
Clinical Chemistry Exam 1
Clinical Chemistry: Quiz
YOU MIGHT ALSO LIKE...
Chemistry MLT(ASCP) - Carbohydrates
OTHER SETS BY THIS CREATOR
OTHER QUIZLET SETS
Unit 2 - Biochemistry