Week 2

Question 1

What is serum?

Answer 1

Plasma ç clotting proteins

Ç = without

Question 2

What type of tube is purple or lavender?

Answer 2

K2 EDTA

Question 3

When do you use a purple or lavender tube?

Answer 3

CBC — when whole blood is needed for analysis

Question 4

What is a tiger top tube for?

Answer 4

SST

Question 5

What kind of testing are you doing with a tiger top tube?

Answer 5

Tube contains clot activator and serum gel separator; it does NOT have anticoagulant and it is used for chemistry tests

Question 6

What are the 3 main anemia indicators that you can see on a CBC?

Answer 6

Low RBC
Low HCT
Low Hb

Question 7

What is anemia?

Answer 7

Low Hb

But also low RBC and HCT

Question 8

What is percentage of blood by volume that is occupied by erythrocytes/RBC?

Answer 8

Hematocrit

Question 9

What is heme molecule made of?

Answer 9

Porphyrin ring + iron

Question 10

Here is produced when iron is

Answer 10

Enzymatically inserted into protoporphyring

Question 11

______ contains a mixture of hemoglobin, oxyhemoglobin, carboxyhemoglobin, methemoglobin, other minor amounts of other forms of hemoglobin

Answer 11

Erythrocytes/RBC

Question 12

What are red cell indices?

Answer 12

MCV
MCH
MCHC

Question 13

What is MCV?

Answer 13

Measurement of the average size of RBC

Question 14

What is MCV used for?

Answer 14

Guide the diagnostic workup in pts with anemia

Folate or vit b12 deficiency

Question 15

What is MCH

Answer 15

Refers to average quantity of hg present in single RBC

Question 16

What is MCHC?

Answer 16

Calculation of amt of hg per unit volume in single RBC

Question 17

What is MCHC used for?

Answer 17

Difference between MCH and MCHC is that the MCHC measurement takes the volume or
size of the red blood cell into account while MCH does not.

Question 18

What is RDW?

Answer 18

Statistical measure of variation in RBC size