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Flashcards in FINAL Hematological Testing Deck (24):
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6 parts of the CBC ( Complete Blood Count)

1. RBC 6. Red Cell Indices
2. WBC
3. Hemoglobin
4. Microhematocrit
5. Erythrocyte Sedimentation Rate (ESR)

1

Why can RBC be elevated?

Dehydration and burns

2

Why can RBC be Too low?

Anemia or bleeding

3

What gauge needle should be used to prevent hemolysis?

18 gauge

4

What is the approximate # of circulating Leukocytes in blood?

4500 - 11,000/mm3

5

What does and increase in WBC mean?

Possible infection or possible corticosteroid use.

6

What is hemoglobin?

Protein molecule in RBC that carries oxygen. It is 85% of a RBC's weight.
14-18mg/100ml in males
12-16mg/100ml in females

7

What is a microhematocrit?

It measures the % of packed RBC in a volume of blood.

A reading of 40 means 40% of the blood's volume is RBCs.
Normal male 39-49 g/DL
Normal female 38-45 g/DL

8

What is a hemoglobinometer?

A device that measures the hemoglobin amount.

9

What is ESR?

Erythrocyte Sedimentation Rate, ESR, Sed Rate
Measures in mm of sedimentation that forms in 1 hour (mm/hr)
Screening tool for the inflammatory process

10

Red Cell Indices

Quantitative amount of hemoglobin as well as size, shape, and number of RBC
MCV, MCH, MCHC, RCDW

Mean Cell Volume (MCV)-measures the size of RBCs. Machine
Mean Cell Hemoglobin (MCH)-Hemoglobin amount per RBC
Mean Cell Hemoglobin Concentration (MCHC)-Amount of Hgb relative to the size of the cell/ RBC. Calculated Hgb/Hct=MCHC
MCH=Hgb/RBC count

11

What are coagulation studies for?

Measure ability of blood to clot
Includes PT, PTT, INR

12

What is the goal of anticoagulant therapy?

To prolong time for blood to clot without causing excessive bleeding (3 times normal)

Blue capped tube, if not done immediately, centrifuge

13

What are the 2 clotting pathways

Extrinsic pathway - dependent on vitamin K

Intrinsic pathway - not dependent on vitamin K

14

Which test uses the Extrinsic Pathway?

Prothrombin Time (PT)

For patients on Warfarin (Coumadin)

15

Which test uses the intrinsic pathway?

Partial Prothromboplastin Time (PTT)
For hemophiliacs ( deficient in factor viii or factor ix)

Assesses heparin therapy

16

What is INR?

International Normalized Ratio
Corrects variations between labs
Normal value of an INR is 1
If taking anticoagulants should be maintained between 2.0 - 3.5

17

What is FBS?

Fasting Blood Sugar- glucose level after pt has been fasting for 8-10 hours prior to test, normal levels 80-109

18

Basic Metabolic Panel (BMP)

Glucose
Calcium
Electrolytes - Sodium, potassium, carbon dioxide, chloride
Blood, urea, nitrogen (BUN)
Creatinine

19

System Function Tests (SFT) Heart???

SGOT. Enzyme found in muscles

20

SFT --- Kidney??

BUN
Electrolytes

21

SFT--- Liver

SGPT
GGTP

22

SFT--- Pancreas

Glucose

23

SFT-- Thyroid

T4 (thyroxine) - hormone secreted by thyroid gland
TSH