test prep
1. How long should a heel warmer be applied to an infant’s heel?
a.30 seconds.
b.1–3 minutes.
c.3–5 minutes.
d.10 minutes.
c: 3–5 minutes
What is the approximate blood volume of an average 150-pound adult?
a.1 liter.
b.3 liters.
c.5 liters.
d.10 liters.
c: 5 liters
How many times should tubes with additives be inverted after collection?
a.None.
b.1–5.
c.5–10.
d.10–15.
c: 5–10
Most specimens collected for therapeutic drug monitoring are collected in a tube with what color stopper?
a.Blue.
b.Tiger.
c.Lavender.
d.Red.
d.Red
Patients must be instructed to abstain from ingesting meat and the drugs aspirin and vitamin C for 3 days for some brands of what type of fecal testing?
a.Culture.
b.Fat.
c.O&P.
d.Occult blood.
d.Occult blood
2 . For which of the following cases would a capillary puncture be contraindicated?
a.Obese patients.
b.Patients at risk for venous thrombosis.
c.Geriatric patients.
d.Severely dehydrated patients.
d: Severely dehydrated patients
Removal of greater than what percentage of a child’s blood volume can cause cardiac arrest?
a.1%.
b.5%.
c.10%.
d.25%.
c: 10%
An analyte needs to be protected from light, but you do not have any amber tubes. What is another way to protect the specimen?
a.Transport it as soon as possible and it will be acceptable.
b.Cover the specimen with aluminum foil.
c.Turn out all the lights during sample collection and transport it to the laboratory right away.
d.Stand the tube upright in a rack with other specimens on all sides surrounding the sample.
b: Cover the specimen with aluminum foil
When implementing Chain of Custody protocols, when does the chain begin?
a.When the specimen is collected.
b.When the reference laboratory receives the specimen.
c.When the courier picks the specimen up from the office.
d.When the patient is identified.
d.When the patient is identified
What type of specimen is needed for a rapid strep test?
a.Blood.
b.Sputum.
c.Throat swab.
d.Urine.
c.Throat swab
3. Puncture of a bone during dermal puncture can result in what potentially serious and sometimes fatal bone infection?
a.Osteochondritis.
b.Osteomalacia.
c.Osteomyelitis.
d.Osteoporosis.
c: Osteomyelitis
A full-term newborn has a blood volume of 80 mL/kg of body weight. The infant weighs 3.2 kg. Your institution’s policy is that a maximum of 3% of a patient’s blood volume may be withdrawn without specific physician orders. How much blood can safely be withdrawn from the infant?
a.2.25 mL.
b.4.76 mL.
c.7.68 mL.
d.10.41 mL.
c: 7.68 mL
A unique identifying number used for cataloging samples in the laboratory is referred to as what kind of number?
a.Accession.
b.Aliquot.
c.Laboratory.
d.Safety.
a.Accession
What type of specimen is tested in the diagnosis of meningitis?
a.Amniotic fluid.
b.Cerebrospinal fluid (CSF).
c.Pleural fluid.
d.Synovial fluid.
b.Cerebrospinal fluid (CSF)
Which of the following bones is close to the surface and at risk of being damaged during a heel puncture?
a.Calcaneus.
b.Metatarsal
c.Navicular
d.Tarsal
a: Calcaneus
Which of the following choices is inappropriate when collecting blood from a child?
a.Explain what you are doing in age-appropriate terms.
b.Give the child some choices such as which finger or which bandage to use.
c.Tell the child the procedure will not hurt.
d.Distract the child just before the stick.
c: Tell the child the procedure will not hurt
A test requisition lists the glucose specimen to be collected as a 2-hour postprandial. When should it be collected?
a.After the patient has fasted for 2 hours.
b.Two hours after the patient takes diabetes medication.
c.Two hours after the patient exercises vigorously.
d.Two hours after the patient eats.
d.Two hours after the patient eats
How soon after collection must a urine sample be delivered to the laboratory?
a.Within 5 minutes.
b.Within 30 minutes.
c.Within 1 hour.
d.Within 24 hours.
c.Within 1 hour
Which of the following is the appropriate site for dermal puncture on an infant’s foot?
a.Rear part of the arch of the foot.
b.Medial and lateral borders of plantar surface.
c.Fatty part of the middle toe.
d.Center of the plantar surface.
b: Medial and lateral borders of plantar surface
How should the tourniquet be applied to a geriatric patient?
a.Tighter than usual.
b.Looser than usual.
c.The same as usual.
d.No tourniquet should be used on the geriatric patient.
b: Looser than usual
During an oral GTT, what is the patient allowed to consume?
a.Nothing.
b.Water only.
c.Water, black coffee, or diet cola.
d.Anything sugar-free.
b.Water only
What type of urine collection is best for pregnancy tests?
a.Catheterized.
b.First morning.
c.Random.
d.Timed.
b.First morning
The detection of HCG in a patient sample is useful in the diagnosis of what condition?
a.Anemia.
b.Heart attack.
c.Kidney disease.
d.Pregnancy.
d.Pregnancy