Human PAI-1 total antigen assay ELISA kit

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Human PAI-1 total antigen assay ELISA kit

Plasminogen activator inhibitor type 1 (PAI-1) is involved in the regulation of the blood fibrinolytic system. Increased plasma levels of PAI-1 are implicated in the impairment of fibrinolytic function and may be associated with thrombotic diseases. Levels of PAI-1 increase with age and are elevated in conditions such as normal pregnancy and sepsis. The sensitive quantitative measurement of total human PAI-1 antigen in plasma and other biological samples is easily performed with this 96 well strip format ELISA kit. The PAI-1 concentration of normal platelet-free plasma is 21 ng/ml, platelet-rich plasma is 283 ng/ml and serum is 270 ng/ml. The assay measures human PAI-1 in the 0.1-100 ng/ml range. Samples giving human PAI-1 levels above 100 ng/ml should be diluted in PAI-1 depleted plasma before use. It is important to ensure a platelet free preparation of plasma as platelets can release PAI-1. Human PAI-1 will bind to the capture antibody coated on the microtiter plate. Free, latent, and complexed PAI-1 will be detected by the assay. After appropriate washing steps, anti human PAI-1 primary antibody binds to the PAI-1. Excess antibody is washed away, and bound antibody is reacted with the secondary antibody conjugated to HRP. Following an additional washing step, TMB substrate is used for color development at 450 nm. Color development is proportional to the concentration of PAI-1 in the samples. A standard calibration curve is prepared in blocking buffer using dilutions of purified PAI-1 and is measured along with the test samples. All reagents and standards are provided in these ELISA kits.
Suggested additional reagents: Human PAI-1 Depleted Plasma

Gene ID: 5054
Swiss-Prot/UniProt ID: P05121

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1. Bondu V, Schrader R, Gawinowicz MA, et al. Elevated cytokines, thrombin and PAI-1 in severe HCPS patients due to Sin Nombre virus. Viruses. 2015;7(2):559-89. Link to article

2. Prabhudesai A, Shetty S, Ghosh K, Kulkarni B. Dysfunctional fibrinolysis and cerebral venous thrombosis. Blood Cells Mol Dis. 2017. Link to article