OSMT Exam Study Guide Questions with
All Correct Answers 2026-2027 Updated.
Glassware used to measure 24-hour urine volumes is a - Answer Graduated Cylinder
Glassware used to make 100ml of a 12% solution is a - Answer Volumetic Flask
A suction device used to draw up liquids is a - Answer Safety Bulb
The pipette with a bulged-out portion in the middle is a - Answer Volumetric Pipette
Which piece of glassware would not give critical measurement - Answer Beaker
The durable material used to make heat resistant glassware is - Answer Borosilicate
Solid crystals of potassium oxalate are added to distilled water in a container. what term would
describe the potassium oxalate? - Answer Solute
The destruction of all micro-organisms including spores is called - Answer Sterilizations
A "ug" is a unit to describe - Answer weight
a pH of 2 is ______ than a pH of 5 - Answer 1000 times more acidic
Cells in a hypertonic solution will - Answer Dehydrate
The solution used to fix a pap smear is - Answer Cytospray
Blood for an RBC count must be prepared from - Answer EDTA Blood
Which reagent is NOT routinely used to preserve tissue in a life-like manner - Answer Formic
Acid
Which piece of histology equipment is not temperature dependent - Answer Microtome
,A biopsy is - Answer Excision of a representative tissue sample
During tissue processing, What is the correct sequence of steps - Answer Dehydration,
Clearing, Infiltrations
Fixation is important in tissue processing because it - Answer 1. Prevents cell morphology
changes and shrinkage
2. Allows tissue to be examined in a life-like condition
3. Facilitates the staining process
The liquid portion of blood remaining after a clot has formed is called - Answer Serum
Which test could not be performed on a serum sample - Answer Clotting factors
The shape of a normal erythrocyte is described as - Answer Biconcave disc
Glucose results are correctly reported in - Answer mmol/L
If a patient refuses to have a venipuncture done you should - Answer - Must NOT continue
with the procedure
- Notify the patients physician
Which statements is false when performing a venipuncture:
1. The vein is entered at 15-20 degrees angle
2. The tubes are pushed onto the needle with the thumb of the strongest hand
3. The bevel of the needle is pointed up when entering the vein
4. The tourniquet is removed before withdrawing the needle
5. The patient's arm is cleansed before palpating the vein - Answer Patients arm is cleansed
before palpating the vein
A biohazardous container is used to discard:
1. Lancets
2. Needles
3. Band-aid wrappers
4. Lancets & Needles
5. All 3 - Answer Lancets and Needles
,Which needle gauge corresponds with the smallest needle size - Answer 23
The vacutainer tube which is used to collect and separate serum is the - Answer SST - Gold top
If a lavender top, plain red top, grey top, light top tubes are collected, what is the order of draw
- Answer Red top
Light Blue
Lavender EDTA
Grey Top
The tourniquet is: - Answer Used to increase venous fill
If patient faints during venipuncture you should - Answer Remove needle and attend to the
patient
What vein/veins is not used to obtain a venous blood sample - Answer Femoral Veins
A blood specimen collected in a heparinized tube is centrifuged. It will separate into - Answer
Plasma, Buffy Coat, RBC
Hemolysis may result from
1. using 25 - gauge needle on an adult
2. vigorously shaking the blood specimen
3. refrigerating the vacutainer before use
4. leaving the tourniquet on for 3 mins
5. All of the above - Answer All of the above
The test procedure that uses a Westergren tube - Answer Erythrocyte Sedimentation Rate
(ESR)
Latex gloves protect the lab employee from - Answer Body Fluids
Which statement is false when setting up an ESR
1) it must be read in exactly one hour
2) it should be set up near a centrifuge
, 3) the blood level must be exactly zero
4) it should be performed on fresh blood
5) it must be set up in a vertical position - Answer It should be set up near a centrifuge
What is the normal temperature of a laboratory refrigerator - Answer 3 Degree's Celsius
The purpose of doing a differential is to: - Answer Determine the proportions of WBC's in
whole blood
Blood samples for cell counts must be thoroughly mixed immediately before testing to:
1) prevent the clumping of platelets
2) prevent the formation of small clots
3) oxygenate the sample
4) ensure even distribution of all blood components
5) mix anticoagulant with the blood - Answer Ensure even distribution of all blood
components
An automated hematology cell count uses the principle of - Answer Changes in cell electrical
currents
The maximum depth to perform a heel puncture on a newborn is - Answer 2.44 mm
The first drop of blood is wiped after performing a skin puncture to - Answer Remove the last
traces of alcohol
Remove any excess tissue fluid
What areas on an infant are suitable for skin puncture - Answer The Lateral, Flat portion of the
heel
What laboratory department studies antigen-antiboyd reaction - Answer Immunology
What tube would be drawn for ANA - Answer SST
A disinfectant used on metal surface is - Answer 2% glutaraldehyde
What tube would be collected for a cross-match - Answer Rep Top
All Correct Answers 2026-2027 Updated.
Glassware used to measure 24-hour urine volumes is a - Answer Graduated Cylinder
Glassware used to make 100ml of a 12% solution is a - Answer Volumetic Flask
A suction device used to draw up liquids is a - Answer Safety Bulb
The pipette with a bulged-out portion in the middle is a - Answer Volumetric Pipette
Which piece of glassware would not give critical measurement - Answer Beaker
The durable material used to make heat resistant glassware is - Answer Borosilicate
Solid crystals of potassium oxalate are added to distilled water in a container. what term would
describe the potassium oxalate? - Answer Solute
The destruction of all micro-organisms including spores is called - Answer Sterilizations
A "ug" is a unit to describe - Answer weight
a pH of 2 is ______ than a pH of 5 - Answer 1000 times more acidic
Cells in a hypertonic solution will - Answer Dehydrate
The solution used to fix a pap smear is - Answer Cytospray
Blood for an RBC count must be prepared from - Answer EDTA Blood
Which reagent is NOT routinely used to preserve tissue in a life-like manner - Answer Formic
Acid
Which piece of histology equipment is not temperature dependent - Answer Microtome
,A biopsy is - Answer Excision of a representative tissue sample
During tissue processing, What is the correct sequence of steps - Answer Dehydration,
Clearing, Infiltrations
Fixation is important in tissue processing because it - Answer 1. Prevents cell morphology
changes and shrinkage
2. Allows tissue to be examined in a life-like condition
3. Facilitates the staining process
The liquid portion of blood remaining after a clot has formed is called - Answer Serum
Which test could not be performed on a serum sample - Answer Clotting factors
The shape of a normal erythrocyte is described as - Answer Biconcave disc
Glucose results are correctly reported in - Answer mmol/L
If a patient refuses to have a venipuncture done you should - Answer - Must NOT continue
with the procedure
- Notify the patients physician
Which statements is false when performing a venipuncture:
1. The vein is entered at 15-20 degrees angle
2. The tubes are pushed onto the needle with the thumb of the strongest hand
3. The bevel of the needle is pointed up when entering the vein
4. The tourniquet is removed before withdrawing the needle
5. The patient's arm is cleansed before palpating the vein - Answer Patients arm is cleansed
before palpating the vein
A biohazardous container is used to discard:
1. Lancets
2. Needles
3. Band-aid wrappers
4. Lancets & Needles
5. All 3 - Answer Lancets and Needles
,Which needle gauge corresponds with the smallest needle size - Answer 23
The vacutainer tube which is used to collect and separate serum is the - Answer SST - Gold top
If a lavender top, plain red top, grey top, light top tubes are collected, what is the order of draw
- Answer Red top
Light Blue
Lavender EDTA
Grey Top
The tourniquet is: - Answer Used to increase venous fill
If patient faints during venipuncture you should - Answer Remove needle and attend to the
patient
What vein/veins is not used to obtain a venous blood sample - Answer Femoral Veins
A blood specimen collected in a heparinized tube is centrifuged. It will separate into - Answer
Plasma, Buffy Coat, RBC
Hemolysis may result from
1. using 25 - gauge needle on an adult
2. vigorously shaking the blood specimen
3. refrigerating the vacutainer before use
4. leaving the tourniquet on for 3 mins
5. All of the above - Answer All of the above
The test procedure that uses a Westergren tube - Answer Erythrocyte Sedimentation Rate
(ESR)
Latex gloves protect the lab employee from - Answer Body Fluids
Which statement is false when setting up an ESR
1) it must be read in exactly one hour
2) it should be set up near a centrifuge
, 3) the blood level must be exactly zero
4) it should be performed on fresh blood
5) it must be set up in a vertical position - Answer It should be set up near a centrifuge
What is the normal temperature of a laboratory refrigerator - Answer 3 Degree's Celsius
The purpose of doing a differential is to: - Answer Determine the proportions of WBC's in
whole blood
Blood samples for cell counts must be thoroughly mixed immediately before testing to:
1) prevent the clumping of platelets
2) prevent the formation of small clots
3) oxygenate the sample
4) ensure even distribution of all blood components
5) mix anticoagulant with the blood - Answer Ensure even distribution of all blood
components
An automated hematology cell count uses the principle of - Answer Changes in cell electrical
currents
The maximum depth to perform a heel puncture on a newborn is - Answer 2.44 mm
The first drop of blood is wiped after performing a skin puncture to - Answer Remove the last
traces of alcohol
Remove any excess tissue fluid
What areas on an infant are suitable for skin puncture - Answer The Lateral, Flat portion of the
heel
What laboratory department studies antigen-antiboyd reaction - Answer Immunology
What tube would be drawn for ANA - Answer SST
A disinfectant used on metal surface is - Answer 2% glutaraldehyde
What tube would be collected for a cross-match - Answer Rep Top
