RPT practice Test (AMT Certification) with Complete Solutions

The process by which complex substances are broken down into simple substances is called - ANSWER-Catabolism When a patient develops syncope during a venipuncture, the phlebotomist should first: - ANSWER-remove the tourniquet and needle and then call for help. Which substance has a higher concentration in capillary blood than in venous blood? - ANSWER-Glucose is normally higher in capillary blood compared to venous blood and Potassium, Calcium and Total Protein are normally lower If a patient is critical or an antibiotic needs to be given right away, and two blood culture sets are collected - ANSWER-When more than one set of blood cultures are ordered to be collected at the same time, the second set should be obtained from a separately prepared site on the opposite arm if possible When performing a capillary blood collection, the first blood drop is wiped away because - ANSWER-the first drop typically has more tissue fluid Why is it necessary to wipe the first drop of blood away when performing a capillary procedure? - ANSWER-to eliminate excess tissue fluid;To reduce interstitial fluid contamination The color-coded tube that is most frequently associated with coagulation tests is - ANSWER-light blue How far above the venipuncture site should the tourniquet be wrapped around the arm? - ANSWER-3 to 4 inches How long should a tourniquet be placed around a patient's arm? - ANSWER-No more than one minute When is a phlebotomist allowed to perform a venipuncture on an ankle vein? - ANSWER-When all other options have been exhausted and the physician has given approval Prior to bandaging the puncture site the phlebotomist should - ANSWER-examine the site for bleeding During venipuncture, a hematoma may result from which of the following? - ANSWER-Needle bevel is partially inserted into a vein Alcohol should be allowed to dry completely prior to skin puncture to - ANSWER-prevent lysis of red blood cells When palpating, a vein having which one of the following characteristics would be most appropriate to select for venipuncture? - ANSWER-Bouncy Following venipuncture, which of the following should be applied to the venipuncture site? - ANSWER-Clean, sterile gauze pad What is the preferred method for infant blood collection? - ANSWER-Capillary Which of the following actions could cause the formation of a hematoma? - ANSWER-The needle penetrates all the way through the vein what is the most critically affected analyte in a hemolyzed specimen - ANSWER-Potassium The heel is the recommended site for collection of capillary puncture specimens on infants and the phlebotomist is going to stick in the posterior curvature of the heel. Is this correct? - ANSWER-No the medial plantar surface of the heel is the best site to prevent possible bone damage You have properly prepared the antecubital venipuncture site, you have the corrrect collection device and enter the vein at a 20 degree angle. Is this the proper angle of insertion? - ANSWER-No, 30 degrees is the correct angle for the needle to be inserted into the skin If blood begins to flow and then stops when an evacuated tube is pushed into the needle the most likely cause is the - ANSWER-bevel of the needle resting against the vein wall. Petechiae are tiny, nonraised red spots on a patient's skin when the tourniquet is applied. This indicates, that - ANSWER-Petechiae, the tiny red spots, are minute drops of blood that escapes from the capillaries and comes to the surface of the skin below the tourniquet and indicate that the venipuncture site may bleed excessively When is a phlebotomist allowed to use ankle veins to draw blood? - ANSWER-With a physician's order The most critical part of a blood culture collection is - ANSWER-skin antisepsis of the collection site Swelling caused from blood leaking from a blood vessel is - ANSWER-hematoma If serum is left to remain on the blood clot for more than one hour, which of the following most likely will occur? - ANSWER-Serum glucose levels decrease The liquid portion of an anticoagulated blood specimen is called - ANSWER-plasma A collapsed vein will cause a - ANSWER-If a vein collapses during venipuncture there will be a cessation of blood flow. Color coding indicates a needle's - ANSWER-gauge An individual comes in for an autologous donation, what is this person coming to do - ANSWER-Donating their own blood for their own use Blood smears made from EDTA specimens must be prepared within ____ hour of collection. - ANSWER-one Proper identification of a coherent adult inpatient includes - ANSWER-ask the patient their name and check the identification band that is physically attached to the patient. Which of the following would be first in the sequence of performing a finger stick procedure? - ANSWER-a. Sanitize hands and put on gloves. (Correct) b. Clean and air-dry the puncture site. c. Select the puncture/incision site. d. Warm the puncture/incision site. To prevent glycolysis, which additive is used? - ANSWER-Sodium Flouride Partial penetration of the upper wall of a vein may - ANSWER-allow blood to leak into subcutaneous tissue by way of the needle bevel Older patients are more prone to hematoma formation because - ANSWER-their veins have decreased elasticity