Clinical Chemistry: Blood Collection and Specimen Considerations

Tourniquet application: how many minutes is recommended?

• < 1 minute

• > 1 minute

If BP cuff is used, inflate to:

• 40-60 mmHg

• 120 mmHg

• 90-180 mmHg

• 20-40 mmHg

What is the routine antiseptics?

• 70% isopropyl alcohol

• Ethanol assay

• Iodophor chlorohexidine

• 70% alcohol

This may lead to falsely elevated values further enclosure.

• 70% isopropyl alcohol

• Ethanol assay

• Iodophor chlorohexidine

• 70% alcohol

This antiseptic is used for culture?

• 70% isopropyl alcohol

• Ethanol assay

• Iodophor chlorohexidine

• 70% alcohol

This is not recommended by CLSI due to safety and specimen quality issues.

• Needle and Syringe

• Butterfly/Winged Infusion Set

• Evacuated Tube System

This is used for infants and children, hand veins, and difficult-draw situations.

• Needle and Syringe

• Butterfly/Winged Infusion Set

• Evacuated Tube System

This consists of double-headed needle, adapter, color-coded evacuated tube.

• Needle and Syringe

• Butterfly/Winged Infusion Set

• Evacuated Tube System

Standard needle size:

• 21

• 20

• 22

• 23

Length of standard needle:

• + 15

• + 16

• + 17

• + 18