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GELSN
ANTIBODY SCREEN, BLOOD

Test Code GELSN 
Test ANTIBODY SCREEN, BLOOD 
Methodology Red Blood Cell Agglutination (Gel Technique) 
Description Useful for the identification of clinically significant red cell antibodies. 
Specimen Draw blood in lavender/pink-top (EDTA) tube(s). Send 7.0 mL of EDTA whole blood.

NOTE: TUBE MUST BE LABELED WITH FULL NAME OF PATIENT (LAST, FIRST [DO NOT USE NICKNAMES]), DATE OF BIRTH AND/OR IDENTIFICATION NUMBER, DATE AND TIME OF COLLECTION, AND INITIALS OF PERSON DRAWING SPECIMEN. 

Reference Values Negative
If positive, antibody identification will be performed. First time antibody identifications will reflex to red cell antigen typing for each antibody and also to a Direct Antiglobulin Test (Polyspecific). The DAT polyspecific will, in turn, reflex to a DAT, IgG and a DAT, C3d if positive. If the DAT, IgG is positive, an RBC elution will be performed. If indicated (pregnancy), an antibody titer will be performed. An additional charge will result for each of these reflexed tests, if performed. 
Analytic Time 1 Day (May be longer if screen is positive) 
Day(s) Test Set Up Monday through Sunday 
CPT Code(s) 86850  RBC antibody screen (each technique)
86860  RBC antibody elution (if indicated)
86870  RBC antibody identification (each antibody, if indicated)
86880  DAT polyspecific (if indicated)
86880 x 2  DAT, IgG and C3d (if indicated)
86886  Antibody titer (if indicated)
86905  Blood typing, RBC antigens (if indicated)