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Before a routine venipuncture or capillary puncture, the site typically is cleaned with:
isopropyl alcohol.
ethyl alcohol.
povidone-iodine solution.
soap and water.
isopropyl alcohol.
ethyl alcohol.
povidone-iodine solution.
soap and water.
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Question
A syringe is preferred over a Vacutainer collection device when:
the patient’s veins are fragile.
the sample must be drawn from the hand veins.
many tests have been ordered, and multiple tubes must be drawn.
All are correct
the patient’s veins are fragile.
the sample must be drawn from the hand veins.
many tests have been ordered, and multiple tubes must be drawn.
All are correct
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MA-4 Ch 47
blood collection
| Question | Answer |
|---|---|
| Before a routine venipuncture or capillary puncture, the site typically is cleaned with: isopropyl alcohol. ethyl alcohol. povidone-iodine solution. soap and water. | isopropyl alcohol. |
| A syringe is preferred over a Vacutainer collection device when: the patient’s veins are fragile. the sample must be drawn from the hand veins. many tests have been ordered, and multiple tubes must be drawn. All are correct | the patient’s veins are fragile. |
| Which type of tube should be used to collect blood specimens during a glucose tolerance test? Lavender topped Red topped Gray topped Yellow topped | Gray topped |
| The tourniquet should be tied on the arm for no longer than 1 minute. t/f | t |
| What is the first step OSHA recommends for the effective management of an accidental sharps exposure? | Site is washed for 10 minutes with soap, 10% iodine solution, or chlorine-based antiseptic. |
| A tourniquet should never be used when a venous blood sample is to be drawn from the hand. t/f | f |
| During a routine venipuncture, when should the phlebotomist request that the patient “make a fist”? After applying the tourniquet and before inserting the needle. Making a fist is not necessary for a good venipuncture. | Making a fist is not necessary for a good venipuncture. |
| Under OSHA guidelines, needle holders for Vacutainers can be reused for multiple patients, because they are not contaminated during the blood draw. t/f | f |
| According to the American Society of Clinical Pathologists, nearly 80% of physicians’ decisions are based on laboratory test results. t/f | t |
| If blood is flowing into the Vacutainer too slowly, you should withdraw the needle slightly to center it in the vein. t/f | t |
| The proper venipuncture tube for collecting a serum specimen is: a green-topped tube. a light blue-topped tube. a lavender-topped tube. a red-topped tube. a light blue-topped tube and a red-topped tube. | a red-topped tube. |
| The smaller the gauge of the venipuncture needle, the less likely it is that hemolysis of blood cells will occur. t/f | t |
| A tourniquet is used during the phlebotomy procedure to: collapse the artery. prevent venous flow out of the site. make the veins in the area more prominent. prevent venous flow out of the site and make the veins in the area more prominent. | prevent venous flow out of the site and make the veins in the area more prominent. |
| Which is the proper technique for performing a venipuncture? The needle bevel is face up, and the needle is inserted at a 15-degree angle. The needle bevel is face up, and the needle is inserted at a 20- to 30-degree angle. | The needle bevel is face up, and the needle is inserted at a 15-degree angle. |
| You notice that a patient is developing petechiae during a blood draw. This typically means that the patient has a bleeding disorder. t/f | f |
| Which of the following collection tubes contains thixotropic gel? Lavender Red Green Light green | Light green |
| All Vacutainer tubes should be inverted three to five times to mix the blood sample with the tube additive. t/f | f |
| The needle size most commonly used for adult venipuncture is: 16 gauge. 18 gauge. 23 gauge. 20 gauge. | 20 gauge. |
| A tourniquet should remain tied on a patient’s arm no longer than: 1 minute. 2 minutes. 3 minutes. 5 minutes. | 1 minute. |
| A needlestick is more likely to occur if a phlebotomist does which of the following? Attempts to recap a needle. Uses a needle of inappropriate gauge. Uses standard Vacutainer equipment to obtain a specimen. All are correct | Attempts to recap a needle. |
| Leaving a tourniquet tied on a patient’s arm for longer than the recommended time results in: syncope. hemoconcentration. hematoma formation. bifurcation. | hemoconcentration. |
| The laboratory requisition indicates that you are to collect a venous blood specimen for hematology testing, serum chemistry testing, and coagulation studies. What is the proper order of collection for these tubes? | Light blue, red, lavender |
| A patient must give verbal consent before venipuncture can be performed. t/f | t |
| Plasma is present in which of the following venipuncture tubes? SST red-gray tube SST gold tube PST green-gray tube SST gold tube and PST green-gray tube | PST green-gray tube |
| The color of the tube top for collection of a coagulation test is: green. light blue. gray. lavender. | light blue. |
| No anticoagulants are found in which of the following tubes? Lavender topped Red topped Green topped Yellow topped | Red topped |
| The part of the venipuncture needle that fits into the syringe or Vacutainer adapter. Shaft Bevel Hub Retractable sheath | Hub |
| The liquid portion of whole blood that contains clotting factors is called: plasma. formed elements. serum. hemoglobin. | plasma |
| Without a clot activator, whole blood typically clots in about what time frame? 1 to 5 minutes 6 to 12 minutes 15 to 60 minutes 70 to 90 minutes | 15 to 60 minutes |
| A hematoma can be caused by: excessive blind probing to locate a vein. failure to insert the needle far enough into the vein. penetration of the needle through a vein. All are correct | All are correct |
| Why should a tourniquet not be tied too tightly? It impedes arterial blood flow. It restricts venous blood return. Veins won’t bulge or plump up. All are correct. | All are correct. |
| If the patient complains of tingling or numbness during a phlebotomy procedure, the medical assistant should continue the procedure to get it completed as soon as possible. t/f | f |
| Which of the following collection containers is used to test neonates for certain metabolic disorders? Reagent strip Capillary tubes Microcontainers Guthrie card | Guthrie card |
| Capillary blood is a mixture of arterial blood and venous blood. t/f | t |
| The slant at the open end of a needle used for venipuncture is called the: lumen. bevel. shaft. bore. | bevel. |
| If you are drawing blood on an elderly patient with a history of collapsed veins, you should try to collect the blood sample with a syringe. t/f | t |
| If a patient faints while his or her blood is being drawn, the patient must remain in the facility for at least 15 minutes and should not operate a vehicle for at least 30 minutes. t/f | t |
| If a patient has had a mastectomy on the left side, you should never draw blood on that side. t/f | t |
| Which type of tube should be used to collect blood specimens during a glucose tolerance test? Lavender topped Red topped Gray topped Yellow topped | Gray topped |
| Which of the following antiseptics may be used for a blood culture collection site to eliminate contaminating bacteria? Sterile soap pads Benzalkonium chloride Povidone-iodine 70% isopropyl alcohol All are correct | All are correct |
| During a routine venipuncture, when should the phlebotomist request that the patient “make a fist”? After applying the tourniquet and before inserting the needle. Making a fist is not necessary for a good venipuncture. | Making a fist is not necessary for a good venipuncture. |
| When a medical assistant obtains a capillary blood sample, it is important that he or she squeeze and “milk” the finger to obtain an adequate amount of blood. t/f | f |
| What is the major cause of specimen rejection? Insufficient quantity Incorrect tube used for the test ordered Hemolysis Improper handling Defective tube | Hemolysis |
| If samples for more than one tube must be drawn during a venipuncture, which order listed below follows the CLSI standards? Red, lavender, then light blue Yellow, red, then green Gray, red, then lavender Light blue, green, then red | Yellow, red, then green |
| You are required to collect a venous sample for a complete blood count (CBC). Which venipuncture tube would you collect? Red-topped and lavender-topped tubes Light blue–topped tube A lavender-topped tube A red-topped tube | A lavender-topped tube |
| Phlebotomy certifying agencies include which of the following? ASCP IAPS NCA and NPA All are correct | NCA and NPA |
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