11. Laboratories must check each negative antiglobulin test by adding washed cel

Question

11. Laboratories must check each negative antiglobulin test by adding washed cells previously coated with antibody. In t he presence of a negative primary reaction, and agglutination after addition of the check cells, which of the following is not necessarily true? a. active antiglobulin serum was added b. patient serum was added c. washing phase was performed satisfactorily d. antiglobulin serum has not reacted with the original red cells being tested 12. All but one of the following antibodies will be detected in the room temperature phase of a crossmatch a. Anti-M b. Anti-S c. Anti-N d. Anti-Le (a) 13. A 30 year old woman is admitted to a hospital, bleeding pro- fusely. A STAT request for 8 units of packed cell is given Her typing results follow (three is no time for complete Rh typing) Fordward typing Reverse typing Anti-D typing Anti-A Anti-B A cells B cells Immediate 'spin The packed cell inventory on hand includes: 1. 20 units of group O, Rh-positive cells 2. 14 units of group A, Rh-positive cells 3. 10 units of group o, Rh-negative cells 4. 7 units of group A, Rh-negative cells 5. 8 units of group AB, Rh-positive cells 6. 3 units of group AB, Rh-negative cells 7. 2 units of group B, Rh-negative cells What is the priority for releasing units? a. first 5, then 2 if necessary b. first s, then 1 if necessary c. first 6, then 4 if necessary d. first 6, then 5 if necessary

Explanation / Answer

11.Ans-   b. Patient serum was added

Negative antiglobulin test-

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