SEROLOGY - BASIC SEROLOGIC SAFETY & LABORATORY TECHNIQUES

Applied to blood and body fluids containing visible blood for all patients.

• Universal Precautions
• Standard Precautions

Apply the principles of work practice controls and exposure controls to all patients and all patient specimens to prevent exposure of workers to potentially infectious agents and to protect patients.

• Universal Precautions
• Standard Precautions

HBV may be stable in dried blood and blood products at?

• 25 C for up to 7 days
• 35 C for up to 5 days

I. HBV can be present in extraordinarily high concentrations in blood

II. HIV is usually found in lower concentrations

• Statement 1 is correct

• Statement 2 is correct

• Both are correct

• Both are incorrect

At what temperature should the blood is allowed to clot?

• Room temperature
• 4 C

If testing cannot be performed immediately, serum may be stored between?

• 2 C - 8 C for 72 hours
• 2 C - 8C for 24 hours

Sample drawn during the acute phase of the illness - when the disease is first discovered or suspected

• Acute Serum
• Convalescent Serum

Sample drawn during the convalescent phase, usually about 2 weeks later

• Acute Serum
• Convalescent Serum

Complement in body fluids can be inactivated by?

• Freezing to 2-4 C for 30 minutes
• Heating to 56C for 30 minutes

When more than 4 hours have elapsed since the inactivation of body fluid, a specimen can be reinactivated by?

• Heating to 56C for 30 minutes
• Heating to 56C for 10 minutes