NHA Phlebotomy Test - Study Guide 2025/2026
0 according to textbook/NHA exam.
Note: Real life you do invert. - ANS How many times should a red top tube be
inverted?
1-1.5 inches in length - ANS What is the size (in inches) of needle routinely
used for venipuncture?
1) improper time of collection; 2) wrong order of draw; 3) faulty technique; 4)
exposure to light - ANS What are some of causes of a pre-analytical error(s) ?
1) manufacturing defects; 2) expired tube; 3) a fine crack in the tube - ANS
There are several possibilities why tubes may lose their vacuum due to
_____________?
120 days - ANS What is the normal life span of a RBC?
16 - ANS Which needle has the largest gauge? 16, 21, 22, 23
2.0 mm - ANS What is the recommended depth of a heel puncture on an
infant?
3 days (72hrs) - ANS Sodium Fluoride preserves glucose for how many days?
3-4 inches - ANS How many inches above the site should be the tourniquet be
tied?
3-4 times - ANS How many times should a light-blue tube be inverted?
30 - 60 - ANS How many minutes does normal coagulation take in a red
topped tube ?
30 minutes BEFORE the scheduled dose. - ANS In therapeutic blood
monitoring, the trough levels are tested ___________
45% - ANS What percentage of the blood is made up of formed elements?
5- ANS How many times to invert a red/gray tiger top ?
5- ANS How many types of leukocytes are in blood?
, 5-6 - ANS How many liters of blood does the average adult have?
8-10 times - ANS Invert a Gray Tube ___________ times.
8-12 hrs. - ANS A person should sustain from eating for how many hours prior
to a fasting blood test?
90% - ANS What percentage of formed elements is erythrocytes?
ABG's (Arterial Blood Gases) - measures the acidity (pH) and the levels of oxygen
and carbon dioxide in the blood from an artery. This test is used to check how well
your lungs are able to move oxygen into the blood and remove carbon dioxide from
the blood. - ANS What is the test of the respiratory system ?
Access pt and provide tx (treatment) by medical staff(i.e. DR, RP, PA who ordered
the test(s)) - ANS What is the purpose of the post-analytical phase?
after eating - ANS Postprandial means________.
Agent - because it's the source. - ANS What is the first link in the chain of
infection?
antecubital fossa - ANS What is the preferred site for venipuncture?
aPTT (heparin TDM) - ANS The test used to evaluate intrinsic pathway is
called ____________?
At the patient's bed - ANS Where is the POC testing done ?
atrioventricle - ANS What kind of valve is the tricuspid valve?
Basal - ANS When the body has adequate rest and no food for 12 hours is it
said to be in the __________ state.
basophils - ANS Which WBC carries histamine?
battery - ANS What is the term when you are touching someone without their
permission called?
Biologic - ANS Bacteria and parasites belong to which type of hazard ?
Bleach - ANS What do you use to disinfect a surface other than boiling water ?
Blinking eyes - ANS Which is NOT a common symptom of shock ?
0 according to textbook/NHA exam.
Note: Real life you do invert. - ANS How many times should a red top tube be
inverted?
1-1.5 inches in length - ANS What is the size (in inches) of needle routinely
used for venipuncture?
1) improper time of collection; 2) wrong order of draw; 3) faulty technique; 4)
exposure to light - ANS What are some of causes of a pre-analytical error(s) ?
1) manufacturing defects; 2) expired tube; 3) a fine crack in the tube - ANS
There are several possibilities why tubes may lose their vacuum due to
_____________?
120 days - ANS What is the normal life span of a RBC?
16 - ANS Which needle has the largest gauge? 16, 21, 22, 23
2.0 mm - ANS What is the recommended depth of a heel puncture on an
infant?
3 days (72hrs) - ANS Sodium Fluoride preserves glucose for how many days?
3-4 inches - ANS How many inches above the site should be the tourniquet be
tied?
3-4 times - ANS How many times should a light-blue tube be inverted?
30 - 60 - ANS How many minutes does normal coagulation take in a red
topped tube ?
30 minutes BEFORE the scheduled dose. - ANS In therapeutic blood
monitoring, the trough levels are tested ___________
45% - ANS What percentage of the blood is made up of formed elements?
5- ANS How many times to invert a red/gray tiger top ?
5- ANS How many types of leukocytes are in blood?
, 5-6 - ANS How many liters of blood does the average adult have?
8-10 times - ANS Invert a Gray Tube ___________ times.
8-12 hrs. - ANS A person should sustain from eating for how many hours prior
to a fasting blood test?
90% - ANS What percentage of formed elements is erythrocytes?
ABG's (Arterial Blood Gases) - measures the acidity (pH) and the levels of oxygen
and carbon dioxide in the blood from an artery. This test is used to check how well
your lungs are able to move oxygen into the blood and remove carbon dioxide from
the blood. - ANS What is the test of the respiratory system ?
Access pt and provide tx (treatment) by medical staff(i.e. DR, RP, PA who ordered
the test(s)) - ANS What is the purpose of the post-analytical phase?
after eating - ANS Postprandial means________.
Agent - because it's the source. - ANS What is the first link in the chain of
infection?
antecubital fossa - ANS What is the preferred site for venipuncture?
aPTT (heparin TDM) - ANS The test used to evaluate intrinsic pathway is
called ____________?
At the patient's bed - ANS Where is the POC testing done ?
atrioventricle - ANS What kind of valve is the tricuspid valve?
Basal - ANS When the body has adequate rest and no food for 12 hours is it
said to be in the __________ state.
basophils - ANS Which WBC carries histamine?
battery - ANS What is the term when you are touching someone without their
permission called?
Biologic - ANS Bacteria and parasites belong to which type of hazard ?
Bleach - ANS What do you use to disinfect a surface other than boiling water ?
Blinking eyes - ANS Which is NOT a common symptom of shock ?
