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Which of the following is extremely important for a cancer test? A. All of these B. Positive predictive value C. Sensitivity D. Negative predictive value - A Which of the following markers typically requires testing of biopsied material rather than serum? A. CEA B. CA19-9 C. CA 125 D. HER-2 - D Elevated CEA levels are often used as indication of which type of cancer? A. Breast B. Ovarian C. Colon D. Thyroid - C Which of the following is the best predictor of prostate canc...

Accuracy - mean, how close to actual value Precision - Standard deviation, how close values are to each other The most important key parameters of a qualitative test - reference values, predictive values, specificity The key parameters of a quantitative test - accuracy, reference values, sensitivity The reference range most acceptable for quantitative tests - within 95% of the mean value For quantitative tests, critical values typically are considered those that occur where? ...

Precision is best represented by which of the following? A. Variance B. Standard deviation C. Mean (average) D. Gaussian distribution - B Predictive value for a negative Qualitative Test is best described as: A. Both answers are correct B. PPV = TP/(TP+FP) - the number of a true positive values divided by all observed positive values C. NPV = TN/(TN+FN) - the number of true negative values divided by all observed negative values - C Accuracy is best represented by which of the fol...

What's in the Buffy Coat? - White blood cells and platelets What is hematocrit? - RBC/ total volume, packed cell volume (PCV) What is MCV? - Mean cell volume: average volume of RBC What does elevated or decreased MCV levels indicate? - Elevated: enlarged erythrocytes, B12 and folic acid deficiency Decreased: small erythrocytes, iron deficiency What is the role of platelets? - Blood clot formation Why are statistics used in clinical chemistry? - Statistics are used to dra...

Hyperthyroidism is diagnosed by which of the following? A. Decreased T4 and decreased T3 B. Increased T4 and increased T3 C. Decreased T4 and increased T3 D. Increased T4 and decreased T3 - B A 30 year old women had gestational diabetes a year ago. She is 250 pounds and has an oral glucose tolerance test of 500 mg/dl. The woman is most likely going to be diagnosed with ____________. A. Gestational Diabetes B. Type II C. Type I D. Hypoglycemia - B The storage form of glucose is ca...

Voltage is - the force that pushes electrons through a load. Voltage drop - this value requires a certain amount of voltage to push a given current through a given amount of resistance. Series Circuit Voltage Drops - voltage will drop across each resistance that is connected to the circuit, and less voltage will be available to push the current through the next load. By the last time the current flows through the last load connected to the circuit, all voltage is used up. The sum of ...

What is service? - also low voltage but runs pole to customer or pedestal to customer. What is a loop feed design? - allows any section of cable or transformer to be taken out of service without affecting the adjacent customers and obtain a normal open. If you have voltages of 7200/12470 which voltage is phase to neutral? - the smaller voltage number. Why do customers prefer underground systems? - they cannot be seen. Underground systems remain how many times more expensive than ...

How many workers can be attached to a vertical lifeline at a time? - one What is the common rule of thumb for fall arrest protection? - Fall arrest for Horizontal, Positioning device for Vertical Fall arrest systems consist of? - Harness, Lifeline/Lanyard, Anchorage What is suspension trauma? - When you fall and have been suspended for some time. Legs start to lose circulation What is the maximum allowable combined tool and body weight? - 310 Ibs On poles, towers, and simila...

Volt (V) - A measurement of electrical pressure Voltage - Electric pressure or electromotive force What are the effects of voltage? - 1. Amount of insulation needed 2. The separation between line conductors 3. Safe working practices 4. The types of tools needed to work on the lines Voltage is measured between how many points? - 2 points Typical distribution voltages - 1. 7,200/12,470 2. 7,600/13,200 3. 12,000/20,800 4.19,900/34,500 How many readings for transmission ...