in class questions

Question 1

A patient serum reacts with 2 out of 3 antibody screening cells at the AHG phase of testing. 8/10 crossmatched units were incompatible at ahg. All reactions were markedly enhanced with enzymes. Which antibody is likely reacting?

Anti-M
Anti-E
Anti- little c
Anti-Fya

Answer 1

Anti- little c

Question 2

Which characteristics are true of all 3 of the following antibodies: Anti-Fya, Anti-Jka, Anti-k

May show dosage, may cause TRXN
Detected at IAT phase and may cause HDN/TRXN
Not detected with enzyme treated cells, ma cause delayed TRXN
Requires IAT technique for detection, usually not responsible for HDN

Answer 2

Detected at IAT phase and may cause HDN/TRXN

Question 3

An auto control gives a mixed fiel result. Is this a valid test result?

Yes, the result shows the patient has an auto antibody
Yes, the patient has been recently transfused
No, the panel cells cannot give mixed field results, something is wrong with the test
No, the control has failed, the test must be repeated until it gives valid results

Answer 3

Yes, the patient has probably been recently transfused

Question 4

Which of the following neutralizing substances is matched to its antibody?

Breast milk - P
Normal Human plasma - Chido/Rogers
Hydatid Cyst Fluid - Lewis
Saliva - I

Answer 4

Normal Human Plasma - Chido/Rogers

Question 5

In which of the following rxns would a positive agglutination complete your work up?

Rue In
Rule out
Phenotype testing of donor
phenotype testing of the patient

Answer 5

Rule In

Question 6

McLeod syndrome is associated with nulls of which blood group

Kidd
Kell
Duffy
Lutheran

Answer 6

Kell

Question 7

Which of the following antigens appears on the antigram but does not need to be ruled out unless suspected because it is low incident?

K
KpA
InA
Xga

Answer 7

KpA