Week Six: Diagnostic Sampling Flashcards
What is a veterinary technicians role in diagnostic sampling?
Prepare, collect, submit information
Venipuncture samples should be collected with…
- Minimal stress to patient
- Minimal trauma to vessels
- Minimal discomfort to patient
What does stress affect on some laboratory tests?
- Leukogram
- Cortisol
- Glucose
The gauge of the needle depends on what?
- Vessel size
- Amount of blood required
- Intended use of the sample
- Technician preference
- Species and size of patient
What are the common venipuncture sites for cats?
Femoral, jugular, cephalic
What are the common venipuncture sites for dogs?
Jugular, cephalic, lateral saphenous
What is the best vein to draw from?
Jugular
What is an LTT or PTT?
Does it contain an anticoagulant? If so what is/are they?
Lavender or Purple top tube
Yes; EDTA
What are LTTs used for?
CBC and BUN
What does BUN stand for?
Blood uria nitrogen (used for kidney tests)
What is a RTT?
Does it contain an anticoagulant? If so what is/are they?
Red top tube
No
List some characteristics of a RTT
Can have a separator; Serum Separator tube or Tiger Top tube
When spun, produces serum
What is a GTT? (more common one)
Does it contain an anticoagulant? If so what is/are they?
Green top tube
Yes; Heparin sometimes Lithium
Heparin is always in ________ tubes
Lithium are always in _________ tubes
Glass
Plastic
When a Green top tube is spun, what does it produce?
Plasma
What is a BTT?
Does it contain an anticoagulant? If so what is/are they?
Blue top tube
Yes; Sodium citrate
What is important to remember about a BTT?
NEVER remove the top
What is a GTT (less common one)
Does it contain an anticoagulant? If so what is/are they?
Grey top tube
Yes; Oxylate
What is produced from a grey top tube when it’s spun?
Plasma
What information concerning the patient do you need to know prior to venipuncture?
When last medication was given
Do they have a bleeding disorder?
Have they eaten today?
If plasma is a red color, what is the term and cause?
Hemolytic; multiple (human) errors
If plasma is a yellow color, what is the term and cause?
Icteric; liver failure