Unitek LVN: specimen collection Exam Practice Latest 2026
Updated Questions and Verified 100% Solutions (2026/2027)
Grade: A+|Status: Guaranteed Pass
Glucose test
Measurement of the amount of glucose (sugar) in the blood - side of finger
Only tiny drop of blood needed as the glucometer will suction the blood
Before you administer contrast
Must check for allergies to iodine/seafood
Always clean labia
front to back
informed consents
It is Dr. who should explain procedures initially, how procedure will be performed and
benefits/risk to pt and responsible family member.
It is nurse's responsibility to re-enforce and explain info, confirm pt understands it(extra
support). Vertify that written consent is not always necessary for individual test - informed
verbal consent may be adequate but ask if a call needs to be made to family member.
PT has right to refuse treatment.
Lab results
nurse's responsibility to review for abnormalities
Never use
old drainage for wound sample/culture
swabbing wound for culture
irrigate wound with normal saline
and then swab with Q tip as deep in wound as you can go for swabbing for wound culture
24 hour urine specimen
1|Page
,a urine specimen consisting of all urine voided in a 24-hour period. If 1st void flushed, you need
to start again by notifying MD. At at any point during the 24 hours if one specimen flushed, you
need to re-start
diagnostic examination
A physical examination that assists the physician to make a diagnosis. It is the one way a
diagnosis can be established.
Diagnostic examinations
If Dr. hears crackles when listening to chest, a chest x-ray will be ordered
X-ray would confirm pneumonia
CAT/MRI diagnostic tests
are tools to figure out condition of a patient and put their story together
Informed consent before diagnostic procedure
If pt wants nurse to clarify something the Dr. has told pt, it is best for nurse to ask Dr. to return
and re-explain procedure than nurse saying wrong thing/wrong info and pt then refuses
procedure. Best response: Tell me what the Dr. said to you that you need clarifying?
Nurse's responsibilities - diagnostic examination
Reinforce physician's explanation of procedure
confirm pt's comprehension
verify written consent is not always necessary for individual test - informed verbal consent may
be adequate
Anticipate the needs of the physician and have proper supplies ready
Keep pt informed of procedural details that could cause discomfort
Assist pt throughout procedure
special care with older adults
maintain confidentiality when disclosing test results
remove all metal jewelry for MRI and xrays
preparing pt for diagnostic examinations
Nurse must be prepared to answer questions that pt needs clarification on procedure.
An informed pt will be more cooperative during any test e.g. lumbar puncture in back - pt needs
2|Page
, to be still so nurse has to coach them to relax. Pt most likely to relax if pt trusts the nurse.
Pt needs to be told that nothing can be taken by mouth NPO after midnight
Breakfast held until after examination
special room required / piece of equipment is required for the test
medication is needed before or during the test
ALLERGIES to iodine/shellfish - Nurse needs to find out allergies before contrast media test e.g.
CT scan with contract
Why ask for allergy to shellfish/iodine before administering contrast media?
IV quickest way to circulate solutions through body. Dangerous if allergic to shellfish/iodine
specimen
small sample of material needed for laboratory examination
Urinaysis
a diagnostic test that gives a good idea about what is going on in the kidneys. look at physical
properties, different species different properties.
urine culture
Serum creatinine, BUN
Acid phosphatase, prostate-specific antigen levels: Cancer markers
Urodynamic test: strength and flow of urine
Ultrasonography: Bladder, Kidney, Prostate
Cystoscopy: visualize inside of bladder
UA/urine samples must be stored in fridge until picked up
sputum specimen
A specimen of expectorant material from the mouth - forcefully expelled from the lungs and
placed in a sterile container (e.g step throat)
wound culture
performed on wound exudate to determine the presence of microorganisms and to identify the
specific type
Throat culture - sterile applicator to collect from pharynx and tonsils - determines causal
organisms eg. mRSA to rule out an infection process
3|Page
Updated Questions and Verified 100% Solutions (2026/2027)
Grade: A+|Status: Guaranteed Pass
Glucose test
Measurement of the amount of glucose (sugar) in the blood - side of finger
Only tiny drop of blood needed as the glucometer will suction the blood
Before you administer contrast
Must check for allergies to iodine/seafood
Always clean labia
front to back
informed consents
It is Dr. who should explain procedures initially, how procedure will be performed and
benefits/risk to pt and responsible family member.
It is nurse's responsibility to re-enforce and explain info, confirm pt understands it(extra
support). Vertify that written consent is not always necessary for individual test - informed
verbal consent may be adequate but ask if a call needs to be made to family member.
PT has right to refuse treatment.
Lab results
nurse's responsibility to review for abnormalities
Never use
old drainage for wound sample/culture
swabbing wound for culture
irrigate wound with normal saline
and then swab with Q tip as deep in wound as you can go for swabbing for wound culture
24 hour urine specimen
1|Page
,a urine specimen consisting of all urine voided in a 24-hour period. If 1st void flushed, you need
to start again by notifying MD. At at any point during the 24 hours if one specimen flushed, you
need to re-start
diagnostic examination
A physical examination that assists the physician to make a diagnosis. It is the one way a
diagnosis can be established.
Diagnostic examinations
If Dr. hears crackles when listening to chest, a chest x-ray will be ordered
X-ray would confirm pneumonia
CAT/MRI diagnostic tests
are tools to figure out condition of a patient and put their story together
Informed consent before diagnostic procedure
If pt wants nurse to clarify something the Dr. has told pt, it is best for nurse to ask Dr. to return
and re-explain procedure than nurse saying wrong thing/wrong info and pt then refuses
procedure. Best response: Tell me what the Dr. said to you that you need clarifying?
Nurse's responsibilities - diagnostic examination
Reinforce physician's explanation of procedure
confirm pt's comprehension
verify written consent is not always necessary for individual test - informed verbal consent may
be adequate
Anticipate the needs of the physician and have proper supplies ready
Keep pt informed of procedural details that could cause discomfort
Assist pt throughout procedure
special care with older adults
maintain confidentiality when disclosing test results
remove all metal jewelry for MRI and xrays
preparing pt for diagnostic examinations
Nurse must be prepared to answer questions that pt needs clarification on procedure.
An informed pt will be more cooperative during any test e.g. lumbar puncture in back - pt needs
2|Page
, to be still so nurse has to coach them to relax. Pt most likely to relax if pt trusts the nurse.
Pt needs to be told that nothing can be taken by mouth NPO after midnight
Breakfast held until after examination
special room required / piece of equipment is required for the test
medication is needed before or during the test
ALLERGIES to iodine/shellfish - Nurse needs to find out allergies before contrast media test e.g.
CT scan with contract
Why ask for allergy to shellfish/iodine before administering contrast media?
IV quickest way to circulate solutions through body. Dangerous if allergic to shellfish/iodine
specimen
small sample of material needed for laboratory examination
Urinaysis
a diagnostic test that gives a good idea about what is going on in the kidneys. look at physical
properties, different species different properties.
urine culture
Serum creatinine, BUN
Acid phosphatase, prostate-specific antigen levels: Cancer markers
Urodynamic test: strength and flow of urine
Ultrasonography: Bladder, Kidney, Prostate
Cystoscopy: visualize inside of bladder
UA/urine samples must be stored in fridge until picked up
sputum specimen
A specimen of expectorant material from the mouth - forcefully expelled from the lungs and
placed in a sterile container (e.g step throat)
wound culture
performed on wound exudate to determine the presence of microorganisms and to identify the
specific type
Throat culture - sterile applicator to collect from pharynx and tonsils - determines causal
organisms eg. mRSA to rule out an infection process
3|Page
