Blood Collection Methods

Depth of skin puncture in heel.

• greater than 2.4 mm

• greater than 20.4 mm

• Less than 20.4 mm

• Less than 2.4 mm

Binds Ca2+ to form soluble complex.

Test that requires heparinized plasma.

• Osmotic Fragility Test

• Leukocyte Alkaline Phosphatase (LAP)Score

• Ascorbate Cyanide Screening Test

• Sodium Dithionite Test

Optimum concentration of EDTA.

• 1.05 mg/L

• 1.5 mg/mL

• 1.50 mg/L

• 1.005 mg/mL

Excessive concentrations of EDTA can _________ MCHC.

Inactivates thrombin.

Prevents glycolysis

• Anticoagulant

• Antiglycolytic

• Clot activator

• Gel separator

Ratio of blood to citrate anticoagulant.

• 1:9

• 1:4

• 9:1

• 4:1

Prolonged application of tourniquet

• Hemodilution

• Hemoconcentration

• Both

Anticoagulant for yellow top tube

• ACD

• SPS

• Both

• Neither