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Catalog Number: VPK-5004, VPK-5004-5
Measures the Hepatitis B surface antigen (HBsAg) in purified virus or unpurified viral supernatant
Detection limit of approximately 1 ng/ml
HBsAg standard included
Video: Color Development in an ELISA
Catalog Number: MET-5122
Detect indole concentration as low as 31 µM
Suitable for urine, fecal samples, and bacterial cultures
Indole standard included
Catalog Number: MET-5127
Suitable for use with tissue lysates, cell suspensions, serum and plasma
Includes glutamate standard and AST positive control
Catalog Number: MET-5177
Detection sensitivity limit of approximately 1.6 µM Tryptophan
Suitable for use with lysates, serum, plasma, urine and culture supernatants
L-Tryptophan standard included
NOTE: Each sample replicate requires 2 assays for proper data calculation.