Antigram to Explain Prior Question - LabCE.com, Laboratory Continuing Education

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The page below is a sample from the LabCE course Rh-Negative Female with Anti-D at Delivery: A Case Study (retired 6/11/2018). Access the complete course and earn ASCLS P.A.C.E.-approved continuing education credits by subscribing online.

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Antigram to Explain Prior Question

The antigram below explains possible reasons for cell #2 reacting stronger:

The patient may have anti-D and another antibody whose corresponding antigen is on cell # 2 (eg., anti-E or anti-K).
The patient has an antibody other than anti-D (eg, anti-Jk^a) and cell #2 has a double dose of the antigen but cell #1 has only single dose.

Screen Cell Rh Rhesus Kell Duffy Kidd MNSs P Lewis Lu Results Cell

C D E c e C^w K k Kp^a Fy^a Fy^b Jk^a Jk^b M N S s P₁ Le^a Le^b Lu^a Gel
IAT

1 R₁R₁ + + 0 0 + 0 0 + 0 + + + + 0 + 0 + + + 0 0 1+ 1

2 R₂R₂ 0 + + + 0 0 + + 0 0 + + 0 + + + + + 0 + 0 2+ 2

3 rr 0 0 0 + + 0 0 + 0 + 0 0 + + 0 + 0 +^S 0 + 0 0 3

Auto 0 Auto