Immunohematology -
Bottom Line Approach
Exam Questions and
Complete Solutions
Graded A+
Denning [Date] [Course title]
,How should donor blood be collected? - Answer: Should be registered, with a copy of medical history
and physical examination.
Normal BP
At least 110 lbs.
Body temperature of 99.5 F/ 37.5 C.
HgB : 12.5 g/dL
Hct : 38%
What is the aseptic technique when collecting blood for a donation? - Answer: Scrub site for minimum
30 seconds.
Use providine-iodine scrub.
What is the maximum amount of blood that can be collected? - Answer: No more than 10.5 mL of
whole blood per kilogram of body weight.
What is the standard donor interval? - Answer: 8 weeks after whole blood donation.
What should be done if a patient is taking any medications? - Answer: MD must evaluate medications.
Meds taken within 48 hours that affect platelet function : cannot be used as only source of platelets, but
can be part of a platelet pool.
- Ex. ASPIRIN
What is the criteria for allogenic donor selection? - Answer: 16 or above, or based on state laws.
Body temperature must be at or below 99.5 F/37.5 C.
Normal BP : Systolic/Diastolic
HgB : 12.5 g/dL or more
Hct : 38% or more
, Weight : 110 lb or more.
What are some of the criteria for donor deferral for 1 year? - Answer: HepBIg
Possible exposure to Hep B, HIV, malaria through blood products.
Recent tattoo.
Living with or have had sexual contact with someone who is Hep B (+) or HIV(+) and could be showing
symptoms or is high risk.
Mucous membrane blood exposure.
Skin penetration with instruments contaminated with blood/body fluids.
Completion of therapy for syphilis/GC/reactive STS.
Travel to endemic area for malaria.
More than 72 hours in a correctional institution.
What are some of the criteria for donor deferral for 3 year? - Answer: Visitor or immigrant from area
endemic for malaria.
Previously diagnosed with malaria.
May be asymptomatic.
What are some of the criteria for donor deferral permanently or indefinitely? - Answer: Viral hepatitis
after age 11.
Positive for/risk of : HBV, HTLV, HIV, HCV, Trypanosomas, babesiosis, CJD.
Parenteral drug use.
Donation to recipient who developed post-transfusion Hep, HIV, HTLV.
Which anticoagulants expire within 21 days? - Answer: ACD