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53 Cards in this Set

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Equation for Calculating Creatinine Clearance for men and women
CrCl(men) = (140-age)(TBW in kg) / 72(SCr)
CrCl(women) = CrCl(men) * 0.85
Na+ reference range
135-145 mEq/L
K+ reference range
3.5-5.0 mEq/L
Cl- reference range
98-107 mEq/L
CO2 reference range
22-30 mEq/L
BUN reference range
7- 20 mg/dL
SCr reference range
0.5 - 1.3 mg/dL
Glucose reference range
70-110 mg/dL
WBC reference range
4,000-11,000 / mm^3
Hgb for Males reference range
12-17 gm/dL
Hgb for Females reference range
11-15 gm/dL
Hct for Males reference range
40-50%
Hct for Females reference range
38-47%
Plt reference range
150,000-400,000 / mm^3
Chem-7 Profile is made up of which tests?
Na, K, Cl, CO2, BUN, SCr, Glucose
Complete Blood Count (CBC) is made up of which tests?
WBC, Hgb, Hct, Plt
Phenytoin, which is a narrow therapeutic drug, has a normal therapeutic range of:
a. 5-10 mg/L
b. 10-20 mg/L
c. 15-20 mg/L
d. 20-30 mg/L
b. 10-20 mg/L
According to the course syllabus which of the following is/are included as professionalism didactic standards?
a. Identifies and respects the values of others
b. Demonstrates sensitivity to confidentiality issues
c. Completes assigned responsibilities on time
d. All of the above
d. All of the above
The extent to which the mean measurement is close to the true value is called
a) sensitivity
b) accuracy
c) precision
d) specificty
b) accuracy
The reproducibility of a measurement is called
a) specificity
b) sensitivity
c) accuracy
d) precision
d) precision
The ability of a test to identify positive results in patients who actually have the disease, also called true positive rate, is called
a) sensitivity
b) specificity
c) accuracy
d) precision
a) sensitivity
The ability of a test to identify negative results in patients who do not have the disease, also known as a true negative rate, is called
a) accuracy
b) sensitivity
c) precision
d) specificity
d) specificity
Positive results in patients who have the disease is what type of result?
a) true positive
b) true negative
c) false positive
d) false negative
true positive
Positive results in patients who do not have the disease is called a
a) true positive
b) true negative
c) false positive
d) false negative
c) false positive
A negative results in a patient who does not have the disease is called a
a) true positive
b) true negative
c) false positive
d) false negative
d) true negative
A negative result in a patient who actually has the disease is called
a) false negative
b) false positive
c) true positive
d) true negative
a) false negative
Factors that can influence a normal, or reference range, of a lab result include:
a. Age and gender
b. Food and nutritional status
c. Time of day
d. All of the above
d. All of the above
A lab test with values reported with a numerical range (eg. 3.5-5 mEq/L) is classified as:
a. Quantitative
b. Qualitative
c. Specific
d. Sensitive
a. Quantitative
Which of the following is correct?
a
b c
d
a. Hct
b. Hct
c. Hct
d. Hct
d. Hct
The ability to show a positive test result when the person actually has the disease in question is referred to as:
a. Accuracy
b. Predictive
c. Sensitivity
d. Specificity
c. Sensitivity
Which box best describe a false positive result?
Test Result True Result
+ -
+ a b
- c d
a. a
b. b
c. c
d. d
b. b
Which of the following is the WORST reason to order a lab test?
a. Determining the stage or activity level of a disease
b. Determining the recurrence of a disease
c. To determine if a physician made the correct diagnosis
d. Measuring the effectiveness of therapy and guiding its course
c. To determine if a physician made the correct diagnosis
Which box best describe a false negative result?
Test Result True Result
+ -
+ a b
- c d
a. a
b. b
c. c
d. d
c. c
What is the reference range for potassium in the body?
a. 2.5-2.5 mEq/L
b. 3.0-4.5 mEq/L
c. 3.5-5 mEq/L
d. 5.0-6.5 mEq/L
c. 3.5-5 mEq/L
Which of the following is correct?
a b c
d e f
a. Cl
b. Cl
c. Cl
d. Cl
b. Cl
Which of the following does not concern diagnostic tests?
a) they are complex
b) commonly used when signs and symptoms are expressed
c) can be ordered by physicians or nonphysician providers
d) specificity
e) all the above are true
c) can be ordered by physicians or nonphysician providers
(cannot be ordered by nonphysicians...screening tests can though)
Na+, K+. BUN, SCr are all examples of _______ types of lab tests.
a) quantitative
b) qualitative
c) semiquantitative
d) none of the above
a) quantitative
The mean value plus or minus two standard deviations of a laboratory test is known
as:
a. Best value
b. Abnormal value
c. Normal or Reference range
d. Statistical range
c. Normal or Reference range
An indication for Therapeutic Drug Monitoring is which of the following?
a. To assess a drug’s therapeutic effect when such is not easily measured by
physical assessment
b. To determine why a patient is not experiencing an expected therapeutic effect of
a drug
c. To confirm drug toxicity
d. To evaluate the presence of a pharmacokinetic drug interaction
e. All the above
e. All the above
Positive Predictive Value is calculated by:
a. TN / (FP + TN) x 100
b. TP / (TP + FN) x 100
c. TP / (TP + FP) x 100
d. TN / (FN + TN) x 100
c. TP / (TP + FP) x 100
A patient comes in for routine follow-up and a Basic Metabolic Profile is ordered.
This patient has a past medical history of hypertension for which he currently takes an ACE inhibitor. His fasting BMP is:
What lab value(s) is/are abnormal?
137 101 12
134
5.3 26 0.9
a. Na+
b. K+
c. Cr
d. Glucose
e. b and d
e. b and d
An elderly patient comes in for complaints of unusual fatigue. She takes a multivitamin and an 81 mg aspirin daily. She is otherwise healthy. The clinical
pharmacist orders a Hematology profile. The profile results are:
10
7.2 185
31
What laboratory value(s) is/are abnormal?
a. Hb
b. WBC
c. Hct
d. a and b
e. a and c
e. a and c
All of the following are true of INR EXCEPT:
a. It is an abbreviation for International Normalized Ratio
b. An acceptable value for treatment of deep vein thrombosis is 1
c. It is a calculated value designed to standardize PTs worldwide
d. It is a laboratory test to assess warfarin therapy
b. An acceptable value for treatment of deep vein thrombosis is 1
What type of test is a urine pregnancy test?
a. Quantitative
b. Qualitative
c. Semi-qualitative
d. Semi-quantitative
e. None of the above
b. Qualitative
Factor(s) that may change the usual interpretation of the normal range include:
a. Specimen analyzed
b. Demographics
c. Time of day
d. Drugs
e. All the above
e. All the above
A test that produces a value that is equal to or very close to the known quantity is
known to have high __________.
a. Specificity
b. Sensitivity
c. Precision
d. Accuracy
d. Accuracy
Percentage of negative results among people who do not have the disease in
question is called:
a. Sensitivity
b. Specificity
c. Prevalence
d. Predictive Value
b. Specificity
A 42-year-old male presents to the clinic for a routine evaluation. He weighs 78 kg. Today his SCr result was 2.1 mg/dL. Which of the following is the best estimate of this person’s creatinine clearance using the Cockroft and Gault equation?
a.30 mL/min
b.50 mL/min
c.25 mL/min
d.40 mL/min
e.20 mL/min
b.50 mL/min
CrClMEN = [(140 – age)(TBW in kg)] / [(72)(SCr)] = [(140 – 42)(78)] / [(72)(2.1)] = 7644 / 151.2 ~ 50.55 mL/min
Which of the following is the reference range for platelet count?
a.135 – 145 mEq/L
b.4,000 – 11,000/mm3
c.3.5 – 5.0 mEq/L
d.150,000 – 400,000/mm3
e.70 – 110 mg/dL
d.150,000 – 400,000/mm3
25.You are working at a hospital during rotations, and you find that one of your patients presents with the following CHEM-7 profile:

Which of the following is the most appropriate conclusion?
a.The patient should be assessed for symptoms of hypokalemia
b.The patient has a critically-elevated serum sodium level
c.The patient has a critically-elevated serum potassium level
d.The patient has poor renal function
e.All of these results are within the normal range
a.The patient should be assessed for symptoms of hypokalemia
While monitoring a medication regimen for a patient, you come across the following: acetaminophen, calcium carbonate, gentamicin, vancomycin. The medications from this list with a narrow therapeutic range include
a.Calcium carbonate and acetaminophen
b.Calcium carbonate, gentamicin, and acetaminophen
c.Gentamicin and vancomycin
d.Vancomycin and calcium carbonate
c.Gentamicin and vancomycin
25.Sensitivity is defined as
a.The ability of a test to identify positive results in patients who actually have the disease
b.The ability of a test to identify negative results in patients who do not have the disease
c.True positive rate
d.A and C
e.B and C
d.A and C
25.All of the following can be used to assess liver function except
a.Aspartate aminotransferase (AST)
b.Creatinine clearance (CrCl)
c.Alkaline phostphatase
d.Total bilirubin
e.Alanine aminotransferase (ALT)
b.Creatinine clearance (CrCl)