Quidel 00272 hCG Control Set, 4.5 mL Kit Contents: One (1) 4.5mL Vial: Negative Control Buffered Solution with 0.1% Sodium Azide One (1) 4.5mL Vial: Positive Control Contains hCG in a Buffered Solution, with 0.1% Sodium Azide One (1) Package Insert with Complete Use Instructions