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A patient sample for uric acid gave an absorbance reading of 0.4; the 50 mg/dL standard used in the test gave an absorbance reading of 0.1. What is the concentration of uric acid in the patient's sample in grams per deciliter? correct answer: 0.2 g/dL Which statement describe optimal conditions for transport, handling, and storage of blood specimens for clinical chemistry testing? correct answer: Specimen brought to lab, permitted to clot, serums separated & tested as soon as possible D...

Accuracy correct answer: The closeness with which a measurement comes to the true value Precision correct answer: The degree of reproducibility in the measurement of a substance Mean correct answer: Sum of all of a set divided by the number in the set (average) Median correct answer: The point on the scale that has equal number of observations above and below (even number, take the two-center numbers add and divide by 2) Mode correct answer: The value in a set that occurs most f...

Clinical Chemistry I ASCP review| 467 Questions| With Complete Solutions

1) Following overnight fasting, hypoglycemia in adults is defined as a glucose of: a. <70 mg/dL (<3.9 mmol/L) b. <60 mg/dL (<3.3mmol/L) c. <55 mg/dL (<3.0mmol/L) d. <45mg/dL (<2.5mmol/L) correct answer: d (Diagnosis of hypoglycemia in adults.) 3) The preparation of a patient for standard glucose tolerance testing should include: a. a high carbohydrate diet for 3 days b. a low carbohydrate diet for 3 days c. fasting for 48 hrs. prior to testing d. bed rest for ...

Clinical Laboratory Exam MCQs| 585 Questions| With Complete Solutions

Disposal of infectious materials: Off-site activation correct answer: Packaging and shipping of untreated wastes to an offsite facility for inactivation and disposal Stericycle Spectrophotometry correct answer: Automation Analyzers correct answer: Continuous Flow Liquids are pumped through system of continuous tubing. Centrifugal Analysis Force of centrifugation transfers & contains liquids. Discrete Analysis (Most popular) Separation of each sample & reagent in a separate con...

Clinical Chemistry Practice Exam| 228 Questions | With Complete Solutions

respiratory acidosis correct answer: hypoventilation accumulate CO2 by lungs due to hypoventilation body compensates (kidney) by increasing renal excretion of H+ions with increased HCO3 RECOVERY respiratory alkalosis correct answer: hyperventilation EXCESSIVE elimination of volatile acid CO2 by lungs body compensates (kidney) by reduced renal excretion oh H+ions with reduced HCO3 recovery metabolic acidosis correct answer: decreased pH (< 7.35) , and decreased HCO3 (<22). Pa...

Proteins correct answer: Essential components of cells and body fluids. Some made by body, others acquired from diet. Provides information about state of hydration, nutrition and liver function, since most serum proteins are made in the liver. Electrolytes correct answer: sodium (Na), potassium (K), chloride (Cl) and bicarbonate (HCO3-) Affects hydration, acid-base balance and osmotic pressure as well as pH and heart and muscle contraction Levels differ depending on if inside vs. outsid...

Clinical Chemistry (Clinical Chemistry, Blood Gases, Electrolytes, Toxicology) Questions With Complete Solutions

Clinical Chemistry Final Exam Review| 351 Questions | With Complete Solutions

Clinical Chemistry Review| 342 Questions | With Complete Solutions

Disposal of infectious materials: Off-site activation correct answer: Packaging and shipping of untreated wastes to an offsite facility for inactivation and disposal Stericycle Spectrophotometry correct answer: Automation Analyzers correct answer: Continuous Flow Liquids are pumped through system of continuous tubing. Centrifugal Analysis Force of centrifugation transfers & contains liquids. Discrete Analysis (Most popular) Separation of each sample & reagent in a separate con...

Reverse osmosis (RO) is describes as a process: correct answer: In which water is forced through a semipermeable membrane that acts as molecular filter. Activated carbon filters remove: correct answer: Organic Compounds from water A 0.22 micron filter will remove: correct answer: Particles with a diameter of 2.2 microns The unit of resistivity is: correct answer: MQcm The electrical resistance measured between opposite faces of a 1.00 cm cube of an aqueous solution at a specified...

Which of the following compounds is an anticonvulsant used to control tonic-clonic (grand mal) seizures? correct answer: Phenytoin To achieve "steady state", a drug should be administered _________ correct answer: every time it reaches half-life Following the entrance of a drug into the vascular compartment, it will be carried to all organs and fluid compartments. This statement describes which of the following? correct answer: Distribution Which route of administration bypasses th...

Hydrolase that catalyzes hydrolysis of various phosphomonoesters at an acidic pH (5.0) correct answer: Acid phosphatase ACP is predominant in ___ correct answer: Prostate Nonprostatic ACPs are found in ___ correct answer: Bone, liver, spleen, kidney, RBC, and platelets New marker as a diagnostic tool for prostatic carcinoma correct answer: Prostatic specific antigen ACP in vaginal fluid exists up to ___ days correct answer: 4 days In ACP analysis, what ACP is inhibited by tar...

Which is not a major cardiac marker? a. Troponin b. CK-MB c. CK-MM d. Myoglobin e. All are major cardiac markers correct answer: C (CK-M is found in skeletal muscles) A pt diagnosed with heart failure will most likely have which of the following cardiac markers? a. BNP b. Homocysteine c. D-dimer-thrombus d. Fibrinogen correct answer: A It is recommended to check cardiac enzymes three times. Which of the following is NOT one of the recommended time frames. a. At present...

Pipette correct answer: Used to transfer or measure aliquots of a liquid. glass or plastic correct answer: Pipettes are usually made of Aliquot correct answer: refers to a portion of a larger hole Pasteur Pipette correct answer: a disposable pipette that is routinely used in the laboratory National Institute of Standards and Technology (NIST) correct answer: Established tolerances for different volumetric glassware used in the clinical chemistry laboratory. American Society f...

Role of Lipids correct answer: -Precursor for steroid hormone synthesis -Insulators for nerve conduction and heat retention -Rich source of energy & efficient way to store excess calories -Role in cell membranes Chylomicrons correct answer: transporting triglycerides to the liver VLDLs correct answer: transport the triglycerides to the cells for storage or energy use LDL correct answer: low-density lipoprotein HDL correct answer: high-density lipoprotein "Good" Cholester...

101) Random error would be caused by: a. contaminated reagents. b. pipetting errors. c. inappropriate preparation of calibrators. d. low volume reagent blanks. correct answer: B 102) According to CLIA regulations, a score of _____ must be attained on three consecutive external proficiency test challenges for a laboratory to be accredited and continue patient testing. a. 50% b. 60% c. 70% d. 80% correct answer: D 103) You have received your proficiency test results from the accred...