HTRA1 ELISA kit (Human)

SKU: SEL604Hu

Size: 96Tests

# of Times Cited in literature: 8

Prepare Time: 1-3 days(please inquire for mutiple units)

Target Name: HTRA1

Target Full Name: High Temperature Requirement Factor A1

Alternative Names: HtrA; L56; ORF480; PRSS11; HtrA Serine Peptidase 1; Protease,Serine,11; IGFBP5-Protease; High-temperature requirement A serine peptidase 1

Target Species: Human

Uniprot: Q92743

Gene ID: 5654

Featured Series: SE kit

Featured Series Function: Detects protein (regular version)

Specificity: Reactive with Human HTRA1 / High Temperature Requirement Factor A1

Method: Colormetric

Detection principle: Double-antibody Sandwich

Detection range: 31.2-2,000pg/mL

Sensitivity: 13.2pg/mL

Assay Time: 3h

Sample Size: 100uL

Recommended/Predicted Sample Types: Serum, Plasma and other Biological Fluids

Assay Precision: Intra-Assay: CV<10%, Inter-Assay: CV<12%

Reproducibility test menthod: Intra-assay Precision (Precision within an assay): 3 samples with low, middle and high level High Temperature Requirement Factor A1 (HTRA1) were tested 20 times on one plate, respectively. Inter-assay Precision (Precision between assays): 3 samples with low, middle and high level High Temperature Requirement Factor A1 (HTRA1) were tested on 3 different plates, 8 replicates in each plate. CV(%) = SD/meanX100

Storage: 4°C for 1 month/ -20°C for long-term(One year within shelf life)

Shelf-life: 12 months

Specificity: This assay has high sensitivity and excellent specificity for detection of High Temperature Requirement Factor A1 (HTRA1). No significant cross-reactivity or interference between High Temperature Requirement Factor A1 (HTRA1) and analogues was observed.

Stability: The stability of kit is determined by the loss rate of activity. The loss rate of this kit is less than 5% within the expiration date under appropriate storage condition. To minimize extra influence on the performance, operation procedures and lab conditions, especially room temperature, air humidity, incubator temperature should be strictly controlled. It is also strongly suggested that the whole assay is performed by the same operator from the beginning to the end.

Assay procedure summary: 1. Prepare all reagents, samples and standards; 2. Add 100µL standard or sample to each well. Incubate 1 hours at 37°C; 3. Aspirate and add 100µL prepared Detection Reagent A. Incubate 1 hour at 37°C; 4. Aspirate and wash 3 times; 5. Add 100µL prepared Detection Reagent B. Incubate 30 minutes at 37°C; 6. Aspirate and wash 5 times; 7. Add 90µL Substrate Solution. Incubate 10-20 minutes at 37°C; 8. Add 50µL Stop Solution. Read at 450nm immediately.

Test principle: The test principle applied in this kit is Sandwich enzyme immunoassay. The microtiter plate provided in this kit has been pre-coated with an antibody specific to High Temperature Requirement Factor A1 (HTRA1). Standards or samples are then added to the appropriate microtiter plate wells with a biotin-conjugated antibody specific to High Temperature Requirement Factor A1 (HTRA1). Next, Avidin conjugated to Horseradish Peroxidase (HRP) is added to each microplate well and incubated. After TMB substrate solution is added, only those wells that contain High Temperature Requirement Factor A1 (HTRA1), biotin-conjugated antibody and enzyme-conjugated Avidin will exhibit a change in color. The enzyme-substrate reaction is terminated by the addition of sulphuric acid solution and the color change is measured spectrophotometrically at a wavelength of 450nm ± 10nm. The concentration of High Temperature Requirement Factor A1 (HTRA1) in the samples is then determined by comparing the O.D. of the samples to the standard curve.

Research Area: Enzyme & Kinase;

References Citing This Product: Alterations of maternal plasma HTRA1 level in preeclampsia complicated by IUGR

Upregulation of HtrA4 in the placentas of patients with severe pre-eclampsia

Association of frailty with the serine protease HtrA1 in older adults

HtrA1 up-regulates expression of MMPs via Erk1/2/Rock-dependent pathways

Association between first trimester plasma htra1 level and subsequent preeclampsia: a possible early marker?

First trimester HtrA1 maternal plasma level and spontaneous preterm birth

Cross-sectional associations among P3NP, HtrA, Hsp70, Apelin and sarcopenia in Taiwanese population