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Which of the following is part of the standard protocol when doing a bleeding time?

A butterfly-type bandage is used

When collecting blood using a syringe, samples should be placed into evacuated tubes in the following order:

Blue, lavender, red

The outer layer of the heart is the:


A platelet count of 650,000 per cubic millimeter is termed:


A phlebotomist with 6 collection orders for patients in the hospital receives a handwritten laboratory order for a STAT glucose after only completing the fourth phlebotomy. The phlebotomist should:

Collect the STAT glucose, deliver it to the laboratory, then return to perform the other 2 collections

Point-of-care testing (POCT) occurs:

At the patient's bedside, In the emergency department, In patients' homes

Quality control for point-of-care testing (POCT) must be performed:

Each day of use

Special considerations for phlebotomy on an elderly person would most likely include:

Decreasing the angle of penetration of the venipuncture needle

A body fluid that should be protected from light before analysis for bilirubin is:

Amniotic fluid

Skin puncture on an infant should be done on the plantar surface of the heel, medial to an imaginary line extending from the middle of the great toe to the heel or lateral to an imaginary line extending from between the fourth and fifth toes to the heel to avoid injury to the:


The most important part of the blood collection procedure is:

Skin antisepsis

Veins carry:

Deoxygenated blood to the heart

When collecting blood from an artery for arterial blood gases (ABG), it is not necessary to pull back on the plunger of the syringe because:

Arterial blood is under pressure from the contraction of the ventricles

A plasma protein that is not present in serum is:


A specimen for a peak gentamicin level should be collected:

30 to 60 minutes after administration of the drug

If a patient indicates that he/she is not fasting, the phlebotomist should:

Ask the patient's nurse if the sample should be collected at this time

When performing a skin puncture, which specimen should be collected last?

Heparin microcollection tubes

During the venipuncture procedure, place the phlebotomy tray

Within easy reach on a bedside table

Blood samples collected on filter paper for newborn screening tests should not be hung to dry to avoid:

Concentration of the blood toward one end of the filter paper

Chain-of-custody protocol must be followed when collecting a forensic sample to ensure that:

The integrity of the specimen is accounted for

Blood specimens collected for carotene analysis should be:

Protected from light

Blood specimens collected for Prothrombin time testing must be analyzed within:

24 hours of collection

When collecting blood for plasma renin activity testing, the blood must be transported:

In ice water

The right ventricle of the heart pumps blood into the:


Leukocytes are responsible for:

Defending the body against bacteria and viruses

The appropriate course of action for a STAT order is:

To send the tubes to the laboratory immediately upon collection

A fingerstick sample for hemoglobin must be collected from a patient whose middle finger is broken and bandaged. The next best choice for the fingerstick is the:

Ring finger

When testing for a Prothrombin time (PT) with a point-of-care (POC) instrument, the on-board controls (OBC) will:

Be accepted by a bar code range

A patient who has had a mastectomy cannot have blood collected from the arm on the same side as the mastectomy due to:

Lymphedoma - swelling of the lymph nodes causing infection

All testing on cerebral spinal fluid (CSF) samples should be performed within 1 hour of collection because cytolysis is dependent on:


A phlebotomist used a vacutainer system to collect blood specimens for the following laboratory tests: complete blood count (CBC), Prothrombin time (PT), and activated partial thromboplastin time (APTT). The OSHA bloodborne pathogen standard states that:

Both the needle and holder must be discarded together

Collecting blood from a vascular access device can result in:

Colonized bacteria that accumulate around the line can be pulled into the line when used for a blood collection

A patient has an unsuitable antecubital vein. The next best choice to use for phlebotomy would be the:

Dorsal side of the hand

The left ventricle pumps blood into the heart itself and into the circulation via the:

Aortic artery

The principal component of plasma is:


A patient seeks care at the emergency department with a temperature of 101oF. A thorough history and physical exam revealed no cause for the patient's increased temperature. Blood culture specimens should be collected:

2 blood cultures at intervals of 45-60 min, 2 more at 24-48 hours

A fasting urine specimen is:

The second voided urine specimen of the day

An activated partial thromboplastin time (APTT) and factor VIII assay are requested on a patient with hemophilia. The appropriate course of action is to:

Hold pressure on the collection site for 15-20 minutes

When obtaining a routine blood sample and a vein is not evident, a blood pressure cuff may be used at the following level:


Removal of more than 10% of an infant's blood volume at one time may cause:

Cardiac arrest

During a trial in which forensic samples were used as evidence, it was noted that method validation for linearity limits were not performed for the drug-based testing. The evidence is:

Unacceptable due to questionable linearity limits

A blood sample for carotene analysis should be labeled and:

Wrapped in aluminum foil

When a patient seeks care at the emergency department because of complaints of chest pain, acute myocardial infarction (AMI) specimens measuring cardiac markers must be collected:

When the patient arrives, as well as 2-4, 6-8, and 12 hours later

A specimen for a cold agglutinin analysis was collected and placed in a 37°C incubator. The specimen is unacceptable because:

The sample should have been prewarmed for 30 minutes

Specimens for daily chemistry testing were placed into the centrifuge. Upon starting to spin, the centrifuge began to shake. This could be due to

An imbalance of tubes

The best way to prevent mislabeling of a tube is to:

Label blood tubes immediately after collecting

Requirements for personal protective equipment (PPE), chemical hazards, reactivity and health hazards are found in:

Material Safety Data Sheets

The phlebotomist must select the appropriate method of obtaining a blood sample after considering the patient's:

Age and sample requirements

When preparing to collect a sample for an arterial stick the radial artery can be recognized by:

Its pulse

If a sample is delayed en route to the chemistry laboratory, the glycolytic action of blood cells will primarily affect tests for:

Glucose, phosphorous, and enzymes

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