Fresh frozen plasma must be thawed at a maximum of 37oC in a water bath or similar equipment that has been validated and is temperature monitored. When using a water bath, the FFP should be wrapped in a plastic liner. After thawing, it is recommended that the FFP be administered immediately, preferably within 2 hours post-thaw. The BEST way to thaw Fresh Frozen Plasma is to thaw it by:

A. leaving it at room temperature away from agitation

B. refrigerating the FFP on a bottom rack

C. placing the FFP in a 37º C or lower in a water bath

D. placing the FFP in a 121º C or higher in a steam sterilizer

This antibody is found in the serum of Le(a-b-) secretors. Which one of these Lewis blood group system phenotypes usually produces anti-Lea?

A. Le(a+b+)

B. Le(a+b-)

C. Le(a--b+)

D. Le(a--b-)

The role of the laboratory supervisor or manager is to

A. Supervise business functions of testing.

B. Screen cytology for Pap smears.

C. Examine surgically removed organ

D. Supervise technical aspects of testing.

Macroamylasemia can be diagnosed by measuring amylase levels in the urine and serum. In patients with macroamylasemia, there will be high levels of amylase in the serum. However, macroamylasemia can look similar to acute pancreatitis, which also causes high levels of amylase in the blood. To help differentiate, we measure amylase levels in the urine. Urine levels of amylase are low in people with macroamylasemia, but high in patients with pancreatitis. The results which would be MOST consistent with macro-amylasemia are?

A. Normal serum amylase and elevated urine amylase values

B. Increased serum amylase and normal to low urine amylase values

C. Increased serum and increased urine amylase values

D. Normal serum and normal urine amylase values

A cardiac risk profile is performed in:

A. hematology.

B. serology.

C. coagulation.

D. chemistry.

% concentration (expressed as a proportion or ratio) x volume needed = mass of reagent to use.
So... 10% (w/v) solution of sodium hydroxide x 200 mL needed = 20 grams of sodium hydroxide.
How many grams of sodium hydroxide are required to prepare a 200 ml solution of a 10% (weight per volume) solution?
(Atomic weights: Na = 23; 0 = 16; H = 1)

A. 4g

B. 10g

C. 20g

D. 40 g

E. 80 g

The role of provider-performed microscopy (PPM) is the

A. Process of performing laboratory testing at the bedside of the patient and a means of decentralizing some of the laboratory testing.

B. Specific microscopic tests (wet mounts) performed by a physician for his or her own patients.

C. Means by which quality control between laboratories is maintained.

D. both moderately and highly complex

This is the lens power of the scanning objective lens.

A. 4X

B. 40X

C. 10X

D. 100X

Transpeptidase enzymes catalyze the final stage of peptidoglycan synthesis during cell wall formation. Beta-lactam antibiotics bind with these enzymes, interfering with their function. The transpeptidase enzymes are also referred to as PBP's, or penicillin-binding proteins. Beta-lactam antibiotics interfere with cell wall synthesis by:

A. Binding with a transpeptidase

B. Preventing the final stage of peptidoglycan synthesis

C. Interfering with PBPs

D. All of the above

Following an accidental needlestick, the person should be tested for all of the following except:

A. human immunodeficiency virus (HIV)

B. hepatitis C virus (HCV)

C. hepatitis B virus (HBV)

D. hepatitis A virus (HAV)

Troponin is potentially more specific for myocardial damage than CK-MB and stays elevated longer. It may eventually replace CK-MB as the standard marker of myocardial damage. In addition, troponin T has been known to be elevated in the setting of even mild degrees of renal failure. Troponin and CK-MB both tend to rise approximately 3 hours after a MI (hence why the correct answer is "A", since it is false); however, troponins can stay elevated up to 2 weeks as CK-MB tends to return to baseline around 36 hours.
Chemistry
Which of the following statements is FALSE regarding troponin?

A. It rises much sooner after an MI than CK-MB

B. It stays positive much longer than CK-MB

C. It is potentially more specific than CK-MB

D. Troponin T is often elevated in renal failure patients

Myoglobin release is strongly associated with muscle damage; therfore, it would most closely match a diagnosis of massive muscle trauma in this question. Myoglobinuria is MOST likely to be noted in urine specimens from patients with which of the following disorders?

A. hemolytic anemia

B. lower urinary tract infections

C. massive muscle trauma

D. paroxysmal nocturnal hemoglobinuria