Laboratory Procedure #1

What is the primary function of hemoglobin in the blood?

• Transporting hormones

• Carrying oxygen and carbon dioxide

• Fighting infections

• Clotting blood

Which reagent is commonly used in the cyanmethemoglobin method for hemoglobin measurement?

• Drabkin's reagent

• Wright's stain

• Giemsa stain

• Eosin solution

What color indicates the presence of hemoglobin in the cyanmethemoglobin method?

• Green

• Blue

• Brown

• Yellow

What is the normal range of hemoglobin for adult males?

• 12–15 g/dL

• 13.5–17.5 g/dL

• 10–12 g/dL

• 18–20 g/dL

In the hematocrit procedure, what does a low hematocrit value indicate?

• Dehydration

• Anemia

• Polycythemia

• Leukemia

Which instrument is commonly used to measure hematocrit values?

• Centrifuge

• Spectrophotometer

• Micropipette

• Microscope

What is the anticoagulant of choice for hematocrit testing?

• Heparin

• EDTA

• Sodium citrate

• Oxalate

What is the purpose of sealing the capillary tube in the hematocrit test?

• Preventing contamination

• Avoiding leakage of blood during centrifugation

• Allowing oxygen exchange

• Accelerating clotting

What percentage of packed red blood cells is considered a normal hematocrit value for females?

• 36–48%

• 30–40%

• 45–55%

• 20–30%

Which condition may cause an increased hematocrit value?

• Dehydration

• Anemia

• Hemolysis

• Leukopenia