Flashcards in CH 19 LAB Deck (107)
Listing of SF forms?
Alcohol pads contain what percent solution?
70% isopropyl alcohol
Best finger for stick?
Middle or ring (puncture perpendicular to grooves)
Length of lancet puncture depth?
No greater than 2mm
What is the preferred source of blood specimen obtained for clinical examination
When performing a finger puncture the first drop should be wiped away to avoid?
dilution of the specimen with tissue fluid
3–4 inches above the site
Venipuncture is what degree
15–30 with the bevel up
At what point in the venipuncture procedure should the tourniquet be removed
once blood flows freely into tubes
Max TQ time?
When should specimens be labeled
Never before the sample is collected, but before leaving the patient
which color tube is the best choice for routine chem tests
Which color tube is the best choice for a CBC
Additive in green top?
The part of the microscope on which the prepared specimen is placed for examination is called the
What objective should be used for a detailed history of stained bacterial smears
Three objective lenses on microscope?
10x low power, 40x high power, 100x oil-immersion
Usual magnification of ocular lens?
10x (multipy this by the objective lens)
A CBC includes what five tests?
Total red blood cell (RBC) count
Hemoglobin determination (Hgb)
Hematocrit calculation (Hct)
Total white blood cell (WBC) count
White Blood Cell Differential count
function of hemoglobin in the body
Transport oxygen to the tissues
Factors that affect the hgb values
age, sex , altitude
a low rbc count may indicate that the patient has what condition
Hemoglobin grams per 100 ml of blood in men/women?
MEN: 14–18 WOMAN: 12-16
Manual methods for determining blood hemoglobin?
Mixed with cyanomethoglobin and turns brownish color
What is the term for the volume of erythrocytes expressed as a percentage of the volume of whole blood in a sample
FEMALE: 37–47 MALE: 42-52 PERCENT
Normal WBC count?
4,800-10,800 cells per cubic millimeter
Select the term used to describe an abnormally high WBC count