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WorksheetsLab Values and Drug Monitoring Ch 4
Total questions: 95
Worksheet time: 48mins
Explain why monitoring "Lipids and Cardiovascular Risk" is important in drug therapy management.
It helps in diagnosing anemia
It is essential for assessing risk of heart disease and guiding therapy
It is only relevant for respiratory diseases
It is used to monitor HIV progression
Which of the following is commonly included in a Complete Blood Count (CBC)?
Hemoglobin
Albumin
Glucose
Sodium
What is the primary purpose of therapeutic drug monitoring (TDM)?
To monitor drug levels and efficacy/safety
To diagnose infections
To measure blood pressure
To test for pregnancy
Which test panel includes analysis of electrolytes, glucose, and renal function?
Basic Metabolic Panel (BMP)
Complete Blood Count (CBC)
Liver Function Test (LFT)
Lipid Panel
What additional tests are included in a Comprehensive Metabolic Panel (CMP) that are not in a BMP?
Albumin, ALT, AST, total bilirubin, total protein
Hemoglobin, hematocrit, platelets
Glucose, sodium, potassium
White blood cells, red blood cells
Why might a healthcare provider use point-of-care (POC) testing?
For rapid results at the site of patient care
To send samples to an outside laboratory
To monitor only liver function
To test for genetic disorders
When a CBC with differential is ordered, what additional information is provided?
Types of white blood cells analyzed
Blood glucose levels
Electrolyte concentrations
Liver enzyme levels
A pharmacist in many states can order and interpret lab tests for which of the following purposes?
Screening for and diagnosing disease, monitoring drug levels, checking medication adherence
Prescribing antibiotics
Performing surgery
Administering vaccines
Which of the following is NOT typically included in a basic metabolic panel (BMP)?
Hemoglobin
Sodium
Creatinine
Glucose
What is the significance of stick diagrams in lab practice?
They denote the primary components of CBC or BMP in paper chart notes
They show the results of genetic testing
They illustrate the process of blood collection
They are used to calculate medication dosages
Which type of blood cell is also known as an erythrocyte?
Red blood cell
White blood cell
Platelet
Neutrophil
What is the term for an increase in white blood cell count?
Leukocytosis
Leukopenia
Thrombocytopenia
Polycythemia
Which condition is characterized by a decrease in red blood cells or hemoglobin?
Anemia
Polycythemia
Thrombocytosis
Leukocytosis
Which drug is NOT listed as a cause of agranulocytosis?
Ibuprofen
Clozapine
Methimazole
Carbamazepine
What is the significance of a lab value that is termed "critical"?
It indicates a condition that needs to be addressed quickly.
It is always within the normal reference range.
It does not require any action.
It is only used for research purposes.
Why do reference ranges for lab results vary between facilities?
Due to slight variances in products and techniques
Because all patients have the same reference range
Because lab results are always abnormal
Because only adult populations are considered
Which of the following is a decrease in multiple blood cell lines including WBCs, RBCs, and platelets?
Myelosuppression
Polycythemia
Thrombocytosis
Leukocytosis
Agranulocytosis involves a decrease in which types of white blood cells?
Neutrophils, basophils, and eosinophils
Lymphocytes, monocytes, and platelets
Erythrocytes, thrombocytes, and neutrophils
Eosinophils, lymphocytes, and erythrocytes
What is the role of the Joint Commission regarding lab results?
Requires all accredited facilities to create and follow a protocol to identify and report critical values
Provides reference ranges for all lab tests
Treats all abnormal lab results with medication
Only evaluates lab results for research purposes
How can familiarity with lab tests and their interpretation benefit pharmacists taking the NAPLEX?
It greatly reduces the time required to evaluate cases on the exam.
It guarantees a passing score.
It eliminates the need to study disease state chapters.
It is only useful for research pharmacists.
Which of the following is the normal reference range for total calcium (Ca) in adult laboratory tests?
8.5–10.5 mg/dL
4.5–5.1 mg/dL
135–145 mEq/L
70–110 mg/dL
What is the primary reason to calculate corrected calcium in laboratory results?
If albumin is low
If glucose is high
If sodium is low
If potassium is high
Which electrolyte is commonly used with other labs to assess acid-base status and fluid balance?
Chloride (Cl)
Magnesium (Mg)
Phosphate (PO4)
Glucose
A patient with chronic kidney disease is most likely to have an increased level of which electrolyte?
Phosphate (PO4)
Sodium (Na)
Glucose
Bicarbonate (HCO3)
Which of the following drugs can increase potassium (K) levels in the blood?
ACE inhibitors
Loop diuretics
NSAIDs
H2RAs
What is the reference range for serum creatinine (SCr) in adults?
0.6–1.3 mg/dL
7–20 mg/dL
24–30 mEq/L
3.5–5 mEq/L
Which condition is suggested by an increased anion gap (AG) in laboratory results?
Metabolic acidosis
Renal impairment
Hyperglycemia
Osteoporosis
Which laboratory value is used to assess acid-base status and can be measured in both venous and arterial blood?
Bicarbonate (HCO3 or "bicarb")
Serum creatinine (SCr)
Glucose
Magnesium (Mg)
A patient with low muscle mass, amputation, or hemodilution may have falsely low levels of which laboratory value?
Serum creatinine (SCr)
Blood urea nitrogen (BUN)
Sodium (Na)
Phosphate (PO4)
Which of the following is the normal reference range for sodium (Na) in adult laboratory tests?
135–145 mEq/L
95–106 mEq/L
1.3–2.1 mEq/L
5–12 mEq/L
Which of the following is the reference range for White Blood Cells (WBCs) in adults?
4,000–11,000 cells/mm³
1,000–5,000 cells/mm³
10,000–20,000 cells/mm³
500–2,000 cells/mm³
What is the primary function of neutrophils in the body?
To fight infection
To transport oxygen
To produce antibodies
To regulate blood pressure
Which condition is associated with an increase in eosinophils?
Asthma
Diabetes
Hypertension
Osteoporosis
Bands are best described as:
Immature neutrophils released from the bone marrow
Mature red blood cells
Platelets involved in clotting
Lymphocytes that fight viruses
Which of the following is a reason for decreased red blood cell (RBC) count?
Chemotherapy
Smoking
Polycythemia
Erythropoiesis-stimulating agents (ESAs)
What is the reference range for hemoglobin (Hgb) in adult females?
12–16 g/dL
13.5–18 g/dL
10–14 g/dL
16–20 g/dL
Which laboratory value reflects the size and average volume of red blood cells?
Mean Corpuscular Volume (MCV)
Hematocrit (Hct)
Mean Corpuscular Hemoglobin (MCH)
RBC Distribution Width (RDW)
A patient with macrocytic anemia is most likely to have an increased value in which of the following?
Mean Corpuscular Volume (MCV)
Hemoglobin (Hgb)
Eosinophils
Bands
Which of the following is a cause of increased lymphocytes?
Viral infections
Iron deficiency
Smoking
Blood loss
Which of the following statements about RBC Distribution Width (RDW) is correct?
RDW measures the variability in RBC size.
RDW measures the oxygen-carrying capacity of RBCs.
RDW measures the number of platelets.
RDW measures the concentration of hemoglobin in plasma.
A patient is found to have a decreased Mean Corpuscular Volume (MCV). Which condition is most likely present?
Microcytic anemia
Macrocytic anemia
Leukemia
Asthma
Which of the following is NOT a cause of increased white blood cell (WBC) count?
Systemic steroids
Colony-stimulating factors
Epinephrine
Blood loss
Which laboratory test is used to assess the likelihood of acute infection by calculating the absolute neutrophil count (ANC)?
Neutrophils and bands
Eosinophils
Basophils
Lymphocytes
Which of the following is a reason for increased hematocrit (Hct)?
Use of erythropoiesis-stimulating agents (ESAs)
Chemotherapy
Blood loss
Deficiency anemias
Which of the following is a condition associated with decreased RBC count due to low production?
Deficiency anemias (e.g., B12, folate)
Asthma
Polycythemia
Hypersensitivity reactions
What is the reference range for serum iron in adults?
65–150 mcg/dL
250–400 mcg/dL
2–25 mIU/mL
11–300 ng/mL
Which laboratory test is monitored as part of the workup and treatment for iron deficiency anemia?
Total Iron Binding Capacity (TIBC)
Methylmalonic acid (MMA)
Reticulocyte Count
Anti-Factor Xa Activity
Transferrin saturation (TSAT) reference range for males is:
15–50%
12–45%
5–25 mcg/L
0.5–2.5%
Which vitamin is used for further workup of macrocytic anemia when its deficiency is suspected?
Vitamin B12
Vitamin D
Vitamin C
Vitamin K
Which of the following drugs can decrease folic acid levels?
Phenytoin
Metformin
Penicillin
Dapsone
What is the reference range for reticulocyte count?
0.5–2.5%
5–25 mcg/L
65–150 mcg/dL
2–25 mIU/mL
Which test is used in the diagnosis of immune-mediated hemolytic anemia?
Coombs Test, Direct
Glucose-6-Phosphate Dehydrogenase (G6PD)
Ferritin
Erythropoietin
Which enzyme deficiency is determined using the Glucose-6-Phosphate Dehydrogenase (G6PD) test?
G6PD
MMA
TIBC
TSAT
Which of the following is used to monitor low molecular weight heparins (LMWHs)?
Anti-Factor Xa Activity
Reticulocyte Count
Ferritin
Transferrin
For unfractionated heparin (UFH), after how many hours post IV infusion should a peak anti-Xa level be obtained?
6 hours
2 hours
4 hours
8 hours
Which laboratory value is increased due to iron supplementation and decreased due to blood loss or poor nutrition?
Iron
Ferritin
Erythropoietin
Vitamin B12
Which of the following is a reason for increased reticulocyte count?
Blood loss and hemolysis
Iron supplementation
Vitamin D deficiency
Low molecular weight heparin therapy
Which test is used to determine if hemolytic anemia is due to G6PD deficiency?
Glucose-6-Phosphate Dehydrogenase (G6PD)
Coombs Test, Direct
Reticulocyte Count
Ferritin
Which of the following drugs can cause immune-mediated hemolytic anemia?
Penicillins
Metformin
Phenytoin
Vitamin B12
A patient with suspected iron deficiency anemia has a TIBC of 450 mcg/dL. Is this value above, below, or within the reference range?
Above the reference range
Below the reference range
Within the reference range
Not applicable
If a drug-induced cause is suspected and the Coombs test is positive, what should be done?
Discontinue the offending drug
Increase iron supplementation
Start vitamin B12 therapy
Monitor reticulocyte count
Which population should supplement folate according to the notes?
Women of childbearing age and those with alcohol use disorder
Elderly men
Children under 5
Patients with diabetes
What is the reference range for Vitamin B12?
> 200 pg/mL
65–150 mcg/dL
5–25 mcg/L
250–400 mcg/dL
Which test measures the amount of reticulocytes being made by the bone marrow?
Reticulocyte Count
Ferritin
Transferrin
Anti-Factor Xa Activity
Which laboratory test is primarily used to monitor warfarin therapy?
Activated Partial Thromboplastin Time (aPTT)
Activated Clotting Time (ACT)
Prothrombin Time/International Normalized Ratio (PT/INR)
Platelet count (PLTs)
What is the typical reference range for platelet count (PLTs) in cells/mm³?
10,000–50,000 cells/mm³
150,000–450,000 cells/mm³
1,000–5,000 cells/mm³
500,000–1,000,000 cells/mm³
Which condition is suspected when platelets drop more than 50% from baseline after treatment with UFH or LMWH?
Hemophilia
Heparin-induced thrombocytopenia (HIT)
Leukemia
Anemia
A positive SRA (serotonin release assay) test confirms the diagnosis of which condition?
Liver cirrhosis
Heparin-induced thrombocytopenia (HIT)
Hepatic encephalopathy
Bile duct blockage
Which enzyme is released from injured hepatocytes and is used to assess liver function?
Alkaline Phosphatase (ALP)
Aspartate Aminotransferase (AST)
Gamma-Glutamyl Transpeptidase (GGT)
Ammonia
Low albumin levels can be caused by which of the following conditions?
Diabetes and hypertension
Cirrhosis and malnutrition
Asthma and bronchitis
Renal failure and gout
Which laboratory value is often measured in suspected hepatic encephalopathy?
Bilirubin
Albumin
Ammonia
Platelets
Why is it important to correct calcium serum concentrations for low albumin?
Because low albumin increases potassium levels
Because low albumin affects protein-bound drug levels
Because low albumin causes anemia
Because low albumin increases bilirubin
Which medication can cause a false increase in INR?
Daptomycin
Linezolid
Valproic acid
Lactulose
What is the main use of Alkaline Phosphatase (ALP) in laboratory testing?
To monitor warfarin therapy
To assess liver, biliary tract, and bone disease
To diagnose anemia
To detect platelet disorders
A patient with suspected bile duct blockage would most likely have which laboratory test elevated?
Ammonia
Bilirubin (Tbil)
Albumin
Platelets
Which of the following drugs can increase ammonia levels?
Lactulose
Topiramate
Warfarin
Daptomycin
Which laboratory test is used to monitor UFH and parenteral direct thrombin inhibitors?
Prothrombin Time/INR
Activated Partial Thromboplastin Time (aPTT)
Platelet count
Albumin
What is the reference range for albumin in g/dL?
0.1–1.2 g/dL
3.5–5 g/dL
10–40 g/dL
19–60 g/dL
Which laboratory test is used along with other tests to determine causes of liver damage and detect bile duct blockage?
Ammonia
Bilirubin (Tbil)
Gamma-Glutamyl Transpeptidase (GGT)
Alanine Aminotransferase (ALT)
Which laboratory test is used to assess muscle inflammation (myositis) or more serious muscle damage?
Creatine Kinase or Creatine Phosphokinase (CK or CPK)
Troponin I (TnI)
B-Type Natriuretic Peptide (BNP)
C-reactive Protein (CRP)
What is the desirable reference range for Low Density Lipoprotein (LDL) cholesterol?
< 100 mg/dL
< 200 mg/dL
< 150 mg/dL
< 130 mg/dL
Which of the following is true regarding CK-MB, Troponin T, and Troponin I?
They are called "cardiac enzymes" and are used in the diagnosis of myocardial infarction (MI).
They are used to assess liver function.
They are used to measure cholesterol levels.
They are used to diagnose peripheral artery disease.
What does a higher value of C-reactive Protein (CRP) indicate?
Increased inflammation and higher risk of cardiovascular disease
Lower risk of muscle damage
Improved liver function
Decreased cholesterol levels
Which test is used to assess severity of peripheral artery disease (PAD)?
Ankle Brachial Index (ABI)
Troponin I (TnI)
High Density Lipoprotein (HDL)
Coronary Artery Calcium score
If a patient has an ABI (Ankle Brachial Index) of less than 1, what does this indicate?
Presence of peripheral artery disease (PAD)
High risk of myocardial infarction
Normal cardiovascular function
Elevated cholesterol levels
Which of the following statements best describes the role of BNP and NT-proBNP in cardiovascular assessment?
They are markers of cardiac stress and are not heart failure (HF) nor heart disease-specific, but higher values indicate a higher likelihood of HF when consistent with HF symptoms.
They are used to diagnose liver inflammation.
They are used to measure cholesterol levels.
They are used to assess muscle inflammation.
Why is fasting recommended before a lipid blood draw?
To ensure accurate measurement of cholesterol and triglyceride levels
To reduce inflammation markers
To improve muscle enzyme accuracy
To assess liver function
Which laboratory value is associated with both increased coagulation and increased risk of cardiovascular disease (CVD)?
Lipoprotein-a, Lp(a)
Troponin T (TnT)
Creatine Kinase (CK)
B-Type Natriuretic Peptide (BNP)
A coronary artery calcium score is used to measure:
Calcium build-up in the coronary arteries
Muscle inflammation
Liver function
Peripheral artery disease
ABI is used to:
Assess severity of peripheral artery disease (PAD)
Measure liver function
Diagnose myocardial infarction
Assess cholesterol levels
Which fasting plasma glucose (FPG) value is considered positive for diabetes?
≥ 126 mg/dL
80–130 mg/dL
< 154 mg/dL
100–125 mg/dL
What does a Hemoglobin A1C (A1C) value of less than 7% (ADA) or 6.5% (AACE) indicate?
Good average blood glucose control over the past 3 months
High risk of diabetes
Acute hyperglycemia
Severe hypoglycemia
Which test is used to evaluate beta-cell function and distinguish type 1 from type 2 diabetes?
C-Peptide (fasting)
Amylase
Total Thyroxine (T4)
Uric Acid
What is the reference range for preprandial blood glucose according to ADA guidelines?
80–130 mg/dL
< 110 mg/dL
< 180 mg/dL
5–160 units/L
Which enzyme is increased in pancreatitis and can be caused by GLP-1 agonists, DPP-4 inhibitors, valproic acid, and hypertriglyceridemia?
Amylase
Lipase
TSH
Uric Acid
