Introduction to the Clinical Lab/Hematology- Test 1

A solution consists of one part of chemical A to two parts of chemical B. The total volume needed is 150 mL. How much of each chemical will be needed?

1 part chemical A, 2 Part chemical B= 3 parts total (show your work)

The National Institute for Occupational Safety and Health (NIOSH) is involved in overseeing clinical laboratory operations and enforcing safety regulations. True False

False

The gram is a metric unit of volume. True False

False

When performing laboratory work, all of the following are true concerning handwashing EXCEPT: Wash hands after any laboratory procedure. Hand antiseptic is not needed if gloves were worn. Wash hands before beginning a procedure. Wash hands after removing gloves.

Hand antiseptic is not needed if gloves were worn.

The three ways in which the prothrombin time can be reported are in seconds, as the PT ratio, and as the ____________________.

INR

Which is true of red cells in iron deficiency anemia? They are normocytic. They are macrocytic. They are hypochromic. They are normocytic and hypochromic. They are hyperchromic.

They are hypochromic.

Which of the following statements applies to the venipuncture procedure? Standard Precautions must be observed. The procedure includes preparation of the patient. Selecting and preparing the puncture site is part of the procedure. all of the above

all of the above

In the latex tests, any D-dimer present in the patient sample reacts with a highly specific monoclonal ____________________.

antibody

"Thick-walled, elastic, and muscular" describes which type of blood vessel? capillaries arteries veins venules

arteries

The meaning of the suffix -opathy is: state or condition disease cut into create an opening

disease

The serious intravascular clotting condition that can occur after certain bacterial infections is called ____________________.

disseminated intravascular coagulation

A patient with an artificial heart valve could have damaged red blood cells called: codocytes sickle cells stomatocytes nucleated RBCs keratocytes

keratocytes

open space within a tubular organ or tissue

lumen

to examine by touch

palpate

An automated instrument for testing platelet aggregration is the ____________________.

platelet aggregometer

The Remel D-dimer test can be used for a qualitative result or a semi-_________________ result.

quantitative

engineering controls for safety

safety needle systems

Glassware with chips or cracks: should be discarded should be used only for noncritical measurements is not a safety hazard can be repaired with Super Glue

should be discarded

The prefix that means under is: retro- sub- supra- syn-

sub-

The abbreviation for microgram is: µL mL µg mg

µg

Capillary blood can be collected in: capillary tubes special microcontainers or vials directly into test cartridges Only (a) and (b) are true. All (a-c) are true.

All (a-c) are true.

In a doubling dilution series, which of the following is true? Each dilution is half the concentration of the previous dilution. Each dilution is two times as dilute as the previous dilution. The dilution in each tube is found by multiplying the previous dilution by 2. Only (a) and (b) are correct. All are correct (a-c).

All are correct (a-c).

All of these statements are true concerning quality assessment in preparation of reagents EXCEPT: The pipet should be appropriate for the task. Beakers and Erlenmeyer flasks are used to measure ingredients. Reagents should be inspected for signs of deterioration. Proper storage conditions for each reagent must be observed.

Beakers and Erlenmeyer flasks are used to measure ingredients.

All of the following statements are true of venipuncture EXCEPT: The median cubital vein can be used. Blood can be collected above an IV in an arm. The cephalic vein of the forearm can be used. The needle should enter the lumen of the vein.

Blood can be collected above an IV in an arm.

Fever of unknown origin is abbreviated by using the letters: FO FBS FUO FU

FUO

If a worker is careful, it is not necessary to wear a mask and gloves when weighing caustic chemicals. True False

False

If blood flow is slow, the tip of the fingertip can be squeezed to increase flow. True False

False

Microscopes should be transported by firmly grasping the stage and oculars. True False

False

One agency that accredits educational programs for clinical laboratory personnel is the: North Central Association (NCA) American Society for Clinical Laboratory Science (ASCLS) National Accrediting Agency for Clinical Laboratory Sciences (NAACLS) American Society for Clinical Pathology (ASCP)

National Accrediting Agency for Clinical Laboratory Sciences (NAACLS)

All of the following are ESR methods EXCEPT: Sediplast Quick's ESR Westergren Zeta Wintrobe

Quick's ESR

All of the following are appropriate safety measures to incorporate into laboratory procedures EXCEPT: Select procedures that minimize the use of hazardous chemicals. Select procedures that reduce the volume of chemicals that require special disposal. Label all chemicals with hazard information. Store chemicals in alphabetical order so they can be easily found.

Store chemicals in alphabetical order so they can be easily found.

If a 2 M solution is diluted 1:10, which of the following is true? The concentration of the dilution is 0.2 M. The dilution factor is 20. The original solution was 20 M. The dilution factor is 0.2.

The concentration of the dilution is 0.2 M.

A 90% concentration of alcohol is in stock in the laboratory. The percent solution required is 70%. How is 200 mL of 70% made? Give the formula and the final answer.

The formula you would need to use is C1V1=C2V2 (show your work)

All of the following are part of proper venipuncture technique EXCEPT: The patient is identified by asking the name and checking the armband. The tourniquet should be released before the needle is removed from the vein. The patient should hold the arm up and out, away from body. The puncture site should be cleansed with alcohol and allowed to dry.

The patient should hold the arm up and out, away from body.

All of the following are true concerning laboratory balances EXCEPT: They should be checked with known weights at intervals. They should be installed where they do not get bumped and jarred. The weighing pan should be cleaned once a day. They should not be installed in front of a window that can be opened.

The weighing pan should be cleaned once a day.

A patient's hands can be placed in warm water for a few minutes to enhance circulation. True False

True

An example of an analytical factor that can affect the actual test procedure is an interfering substance in the patient's specimen. True False

True

The coarse adjustment can be used with the 10X and 40X objectives but not with the 100X objective. True False

True

Which of the following is a safety rule in the laboratory? Wear safety goggles when working with strong chemicals. Wipe up spills once at the end of each shift. Leave the instrument on when performing repairs. Sandals are permitted as long as hose or socks are also worn.

Wear safety goggles when working with strong chemicals.

Which of the following statements is true of the hemacytometer? When viewed from the top, it has two polished raised platforms. The depressions surrounding the platforms are called ditches. The depressions surrounding the platforms form the letter I. All of the above (a-c) are true. None of the above (a-c) are true.

When viewed from the top, it has two polished raised platforms.

large vein on the inner (pinkie) side of the arm

basilic

superficial vein on the thumb side of the arm

cephalic vein

Sites are prepared for venipuncture by: cleansing with iodine wiping in a circular motion with sterile cotton cleansing with 70% alcohol and allowing the site to dry palpating the vein after the site is cleansed

cleansing with 70% alcohol and allowing the site to dry

The stem that means skin is: cyto- cut- caud- cyan-

cut-

The Fahrenheit scale has the: freezing point of water at 32° boiling point of water at 100° freezing point of water at 212° none of the above

freezing point of water at 32°

swelling of tissue around a vessel due to leakage of blood into the tissue

hematoma

increase in the cellular elements of the blood

hemoconcentration

hollow needle used for injections or for obtaining fluid specimens

hypodermic needle

blood vessel that carries deoxygenated blood from the tissues to the heart

vein

phlebotomy

venipuncture