Positive test controls include: U-87MG. Immunogen sequence: MHTLVFLSTR QVLQCQPAAC QALPLLPREL FPLLFKVAFM DKKTVVLREL VHTWPFPLLS FQQLLQECAH CSRALLQERP STESMQAVIL GLTARLHTSE PGASTQPLCR KHALRVLDMT GLLDDGVEQD PGTMSMWDCT AAVARTCIAQ QQGGAAEPGP APIPVEVRVD LRVNRAS