To make a thick blood smear you should take a large drop of blood and spread it to the size of a

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Why is the first drop of blood wiped away before the specimen is collected?
When preparing blood smears at what degree should the spreader slide be?
Why are the blood smears collected first on a capillary collection?
When performing a capillary puncture it is essential to wipe away the first drop of blood as it is likely to contain Which of the following as a contaminant?

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Question	Answer
What is Pku?	A hereditary inability to metabolize phenylalnine
It is necessary to control depth of lancet insertion during skin puncture to avoid	Bone injury
What is the purpose of warming the site before skin puncture	It increases blood flow up to seven times
To make a thick blood smear you should take a large drop of blood and spread it to the size of a	dime
Fluid that comes from between tissue cells is known as	interstital fluid
A capillary puncture site should not appear bluish from lack of oxygen,a condition known as	cyanosis
A good blood smear should exhibit a	feathered edge
Billirubin specimen should be protected from	light
A microhematocrit tube is primarily ised for manual potassium determinations	False
If a patient has cold hands, you should puncture the pinky(or little 5th finger)	False
A phlebotomist shoud puncture a finger perpendicular to the fingerprint whorls	True
A magnet and flea are used to mix a CBG	True
A baby has a huge fleshy toe. You should collect a billirubin specimen from it	False
Of the following tests,which is most likely to reult in a fatal consequences for the patient if the specimen is misidentified	Type and crossmatch
Which test requires strict skin antisepsis procedures before specimen collection	Blood culture
A bleeding time (BT) test assesses the funtioning of	Thrombocytes
What type of additive is recommended for collecting an ethonol test specimen	Sodium floride
When performing a GTT, the timing should begin	When the patient finishes the glucose drink
Which test is used to monitor heparin therapy	ACT
At what intervals is the blood blotted during a bleeding time test	30 seconds
Which of the folowing test specimens is collected from patients with fever of unkown origin (FUO) to rule out septicemia	Blood Culture
Which of the following should be avoided during a glucose tolerance test (GTT)	Chewing sugarless gum,drinking sugar free tea,smoking low tar cigarettes
When collecting a blood culture specimen directly from a butterfly into blood culture bottles,which should be filled first	Aerobic
Which of the following tests may require special "chain of custody" documentation when collected	Drug screen
I dentify the condition in which a unit of blood is withdrawn from a patient as treatment	Hemochromatosis
Which of tube is used to collect blood for a type and cross match	non additive red top
An autologous blood transfusion is a transfusion of blood	donated by the patient for his or her own use
The most critical aspect of a blood culture collection is	Skin antispesis
This test requires a specimen with a 9.1 ratio of blood to anticoagulant	Prothrombin timre
Th hormone detected in a positive urine pregnancey test is	HCG
Tests that can be preformed using special POCT instruments or test kits include	Glucose
TDM is used by physicians to	Determine a beneficial drug dosage for a patient
A 2 hour postprandial specimen should be drawn	2 hours after the patient has had a meal
When a specimen is collected for legal reasons a strict __________ method of tracking the specimen is preformed	chain of custody
A condition in which a patient has high blood glucose level is known as	hyperglycemic
A patient who is properly absorbing D-xylose will have a D-xylose in her blood and/or urine	True
A patient who is lactose intolerhant will have a normal glucose curve after ingesting a dose of lactose	False
Which fluid is obtained by lumbar puncture	Cerebrospinal
Which fluid is aspirated from the peritoneal cavity	Ascites
WHat additional info is typically required when labeling a nonblood specimen	specimen type and source
This test involves administration of histamine or pentagastrin	gastric analysis
Which test is used to diagnose systic fibrosis	Sweat chloride
Which of the following tests require a 24 hour urine specimen	creatinine clearance
A refridgerated stool sampke would not be suitable for this test	ova and parasities
A urine c and s is typically ordered to detect	presence of uti
An NP culture swab is collected to detect the presence of the organisms that cause	Whooping cough
A first morning specimen is preferred for HCG because it is	usually more concentrated
Drugs of abuse can be detected in	Hair,Urine,saliva
Which type of specimen must be protected from light	Tuberculosis
This type of urine specimen is aspirated directly through the wall of the bladder using a sterile needle	suprapubic
a urine specimen collected directly from the bladder through a tube is called	catherized
The fluid found around a fetus is known as	amniotic
Fluid found around the heart is called	pericardial
mucus or phlem from the lungs is called	sputum
Cellular components in urine are well preserved and require no preservation	False
The process of entering a password and gaining access to a computer is called	logging on
To process input data a computer must	press the enter key
a bidirectional computer interface	allows to go back and forth between systems
which of the following is an example of a computer peripheral	keyboard
Applications software	refers to programs from software companies
Which actions can lead to inaccurate test results	inadequate mixing of edta tubes
You have an aquesition that you are unfamiliar with how do you determine what tube to use and how to collect and handle to specimen	refer to the user manual
what tests cannot be preformed on a hemolyzed specimen	magnesium,most enzyme,potassium
what specimin needs to be chilled	ammonia
A potassium specimen would be rejected for testing	true
The handling of specimens before tested is the ________ phase	preanylitic
Which type of transportaion is acceptable for a cryoglobulin specimen	in a 37'c heat block
Which specimen should be centerfuged immediatly when arrived at the lab	calcium in green top tube
An Edta specimen should be made	within 12 hours of collection
What is the ClSI recommended maxiumum depth of heel puncture	2.0mm
Why are EDTA specimen obtained before other specimens when collected by skin puncture	to minimize effects of platelet clumping
which is the safest area for the infant heel puncture	lateral plantear surface
skin puncture blood references are higher for	glucose
what does calcaneus	heel bone
skin puncture blood most closely resembles	arterial blood
a skin puncture should be done rather than a venipuncture when	a light blue stopper tube is needed
which microcollection container would be used to collect for a CBC	lav

Why is the first drop of blood wiped away before the specimen is collected?

Wipe away the first drop of blood because it may be contaminated with tissue fluid or debris (sloughing skin). Avoid squeezing the finger or heel too tightly because this dilutes the specimen with tissue fluid (plasma) and increases the probability of haemolysis (60).

When preparing blood smears at what degree should the spreader slide be?

Thin film (a): Bring a clean spreader slide, held at a 45° angle, toward the drop of blood on the specimen slide.

Why are the blood smears collected first on a capillary collection?

This is to ensure that the blood will not begin to clot before this specimen is collected; clots will affect the accuracy of the blood count.

When performing a capillary puncture it is essential to wipe away the first drop of blood as it is likely to contain Which of the following as a contaminant?

Wipe away the first drop of blood with a dry sterile gauze pad, as it is likely to contain tissue fluids that will contaminate the specimen. 6.

To make a thick blood smear you should take a large drop of blood and spread it to the size of a

Why is the first drop of blood wiped away before the specimen is collected?

When preparing blood smears at what degree should the spreader slide be?

Why are the blood smears collected first on a capillary collection?

When performing a capillary puncture it is essential to wipe away the first drop of blood as it is likely to contain Which of the following as a contaminant?

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