A patient was phenotyped for the presence of Lewis antigens (Lea and Leb). A 3+ reaction was observed when patient cells were incubated with anti-Lea. No reaction was observed with anti-Leb. Based on these results, the patient’s phenotype is _____________ and the patient is a ____________ of ABH substances.

Within what time after collection of whole blood must RBCs be separated from whole blood in order for platelet and plasma components to be prepared?

A hydrocarbon molecule is considered to be saturated if the molecule contains

A plasma inhibition study was performed on a patient whose serum sample reacted +/– on all panel cells at AHG. Three sets of A, B, C tubes were set up according to the following scheme:Tube A had 2 drops of patient serum and 1 drop of Ch(a+) Rg(a-) plasma.Tube B had 2 drops of patient serum and 1 drop of Ch(a– Rg(a+) plasma.Tube C had 2 drops of patient serum and 1 drop of Ch(a+) Rg(a+) plasma.Screening cells were added in triplicate and incubated for 60 minutes at 37°C. The antiglobulin test was performed. All three A tubes reacted at 2+, and the B and C tubes were negative. What antibody is indicated?

Which tests must be performed on the donor sample?

What anticoagulant is used to eliminate false-negative reactivity caused by cold autoantibodies and rouleaux?

Choose the correct Haworth structure for the alpha anomer of the following monosaccharide: haworth_trans.jpg

Using the gel test system, the technologist used a 3% cell solution. What would be the probable outcome?

A STA       A type and screen comes from surgery. Your institution uses a blood bank band ID bracelet system. The nurse who obtained specimens did not label them with the blood bank number before she handed them to transport to take to the laboratory. What would be the most appropriate action to take?

During an antiglobulin crossmatch, the cells had a jagged edge appearance after the addition of AHG and centrifugation. This indicates a(n) _________ result.