XK Negative

**Semantic type:** Finding

**Definition:** An indication that XK expression has not been detected in a sample.

**Synonyms:** - KX Negative - Kell Blood Group Precursor Negative - Kell Complex 37 kDa Component Negative - Kx Antigen Negative - Kx Blood Group Antigen Negative - Membrane Transport Protein XK Negative - NA Negative - NA Negative - X-Linked Kx Blood Group Negative - X1k Negative - XKR1 Negative