Flashcards in CH 19 LAB Deck (107)
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1
Lab form?
SF 545
2
Listing of SF forms?
P-117
3
Alcohol pads contain what percent solution?
70% isopropyl alcohol
4
Best finger for stick?
Middle or ring (puncture perpendicular to grooves)
5
Length of lancet puncture depth?
No greater than 2mm
6
What is the preferred source of blood specimen obtained for clinical examination
venipuncture
7
When performing a finger puncture the first drop should be wiped away to avoid?
dilution of the specimen with tissue fluid
8
Tourniquet placement?
3–4 inches above the site
9
Venipuncture is what degree
15–30 with the bevel up
10
At what point in the venipuncture procedure should the tourniquet be removed
once blood flows freely into tubes
11
Max TQ time?
1 minute
12
When should specimens be labeled
Never before the sample is collected, but before leaving the patient
13
which color tube is the best choice for routine chem tests
RED TOP
14
Which color tube is the best choice for a CBC
lavender top
15
Additive in green top?
Heparin
16
The part of the microscope on which the prepared specimen is placed for examination is called the
Mechanical stage
17
What objective should be used for a detailed history of stained bacterial smears
oil immersion
18
Three objective lenses on microscope?
10x low power, 40x high power, 100x oil-immersion
19
Usual magnification of ocular lens?
10x (multipy this by the objective lens)
20
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
21
function of hemoglobin in the body
Transport oxygen to the tissues
22
Factors that affect the hgb values
age, sex , altitude
23
a low rbc count may indicate that the patient has what condition
anemia
24
Hemoglobin grams per 100 ml of blood in men/women?
MEN: 14–18 WOMAN: 12-16
25
Manual methods for determining blood hemoglobin?
Mixed with cyanomethoglobin and turns brownish color
26
What is the term for the volume of erythrocytes expressed as a percentage of the volume of whole blood in a sample
hematocrit
27
Hematocrit values?
FEMALE: 37–47 MALE: 42-52 PERCENT
28
Normal WBC count?
4,800-10,800 cells per cubic millimeter
29
Select the term used to describe an abnormally high WBC count
Leukocytosis
30
