MEDCA exam study guide Phlebotomy questions with 100% verified answers 2024

MEDCA exam study guide Phlebotomy questions with 100% verified answers 2024 When blood is removed from the body, the blood clots and the liquid part is called - ANSWERS Serum If veins in the arms cannot be used for venipuncture, the alternative veins can be found in the - ANSWERS Dorsal side of hands and wrists The instrument used to speed the removal of serum by spinning the blood is called a - ANSWERS Centrifuge Before performing a venipuncture, a clean pair of gloves should be put on the presence of the patient because it is a reassuring - ANSWERS Safety concious gesture for both the worker and the patient. Lying face up on their back is called what position? - ANSWERS Supine position To avoid blood-clotting in the collection tube, it is extremely important the blood in the.. - ANSWERS Purple-topped tube be gently inverted a minimum of eight times. What is the normal ph range of a normal body? - ANSWERS 7.35 to 7.45 Serum should be transported to the laboratory for testing and separated from blood cells within what time limit? - ANSWERS Within 2 hours Of the total volume of blood, how much percent is liquid - ANSWERS 55% is liquid A person who has too little hemoglobin or a decreased number of red blood cells is known to be - ANSWERS Anemic Where do blood cells begin their formation? - ANSWERS In the lymph nodes and bone marrow. If the phlebotomist collects blood in the neonatalogy department, how old is the patient? - ANSWERS Hours to a few days old. The iron containing pigment of the red blood cells is called - ANSWERS Hemoglobin How long do mature red blood cells live once they have entered the blood stream? - ANSWERS Approximately 120 days Approximately how many liters of blood does the body contain? - ANSWERS Approximately 5 liters of blood The study of the nature and cause of disease is called - ANSWERS Pathology A specifically labeled puncture-resistant container for the disposal of needles, scalpels and syringes is known as the. . - ANSWERS Sharps container When drawing blood, which vein is most preferred? - ANSWERS The median cubital If blood pressure is read 120/80, which is the systolic pressure? - ANSWERS 120 What is systolic pressure? - ANSWERS The pressure when the heart is contracted. A chemical substance that prevents the heart from clogging is called an... - ANSWERS Anticoagulant Steady-state condition is referred to as - ANSWERS Homeostasis What cannot be converted into bar code symbols? - ANSWERS Handwritten information What is interstitial fluid? - ANSWERS Tissue fluid Fragile veins are most likely to be found in what kind of patient? - ANSWERS Geriatric patients After a finger stick is performed what should the phlebotomist do first. - ANSWERS Wipe away the first drop of blood with a gauze. What is the best angle for spreading a blood smear using two slides? - ANSWERS A 30 degree angle. What are skin puncture samples often used for? - ANSWERS White blood cell differentials. During a skin puncture procedure, the cut should be across the - ANSWERS Fingerprint lines. In most cases, when should blood be drawn to determine medication levels? - ANSWERS Prior to the next dose of medication given. In relation to veins, what does the term occluded mean? - ANSWERS Obstructed. The thumb has a.. - ANSWERS Pulse What is the last step in any phlebotomy procedure, including skin puncture? - ANSWERS Checking that the bleeding has stopped and thanking the patient for cooperating. What is the best way to decontaminate a phlebotomists hands if they are visibly dirty with dust and dirt? - ANSWERS Wash them with soap and water. How long should the alcohol be allowed to dry before venipuncture? - ANSWERS 30 to 60 seconds During a venipuncture what is the best angle for inserting the needle into the skin? - ANSWERS 15 to 30 degrees During a venipuncture, when does the phlebotomist release the tourniquet? - ANSWERS After the needle is inserted and the blood starts to flow. The term "butterfly" refers to a... - ANSWERS Winged infusion set During a venipuncture procedure the needle should always be inserted with the... - ANSWERS Bevel side up Why should blood and urine specimens for microbiological culture be transported to the lab quickly? - ANSWERS To improve the likelihood of detecting pathogens. How long do normal blood specimens take to clot? - ANSWERS 30 to 60 minutes Bar codes in phlebotomy applic