Description
Human SAP (Serum Amyloid P Component) ELISA Kit
The Human SAP (Serum Amyloid P Component) ELISA Kit is a reliable tool for the accurate measurement of Serum Amyloid P Component levels in human serum samples. This kit offers high sensitivity and specificity, delivering precise and reproducible results for various research applications.Serum Amyloid P Component is a critical protein associated with amyloidosis, a group of disorders characterized by the abnormal accumulation of amyloid proteins in tissues. By detecting and quantifying Serum Amyloid P Component levels, researchers can gain valuable insights into the pathophysiology of amyloidosis and its potential therapeutic targets.
With its advanced technology and easy-to-use protocol, the Human SAP ELISA Kit is an essential tool for researchers studying amyloidosis, inflammatory diseases, and other conditions where Serum Amyloid P Component plays a significant role. Order yours today and advance your research with confidence.
| Assay type: | Sandwich |
| Format: | 96T |
| Assay time: | 4.5h |
| Reactivity: | Human |
| Detection Method: | Colormetric |
| Detection Range: | 6.25-400 ng/mL |
| Sensitivity: | 3.75 ng/mL |
| Sample Volume Required Per Well: | 100µL |
| Sample Type: | Serum, plasma and other biological fluids |
| Specificity: | This kit recognizes Human SAP in samples. No significant cross-reactivity or interference between Human SAP and analogues was observed. |
This ELISA kit uses Sandwich-ELISA as the method. The micro ELISA plate provided in this kit has been pre-coated with an antibody specific to Human SAP. Standards or samples are added to the appropriate micro ELISA plate wells and combined with the specific antibody. Then a biotinylated detection antibody specific for Human SAP and Avidin-Horseradish Peroxidase (HRP) conjugate are added to each micro plate well successively and incubated. Free components are washed away. The substrate solution is added to each well. Only those wells that contain Human SAP, biotinylated detection antibody and Avidin-HRP conjugate will appear blue in color. The enzyme-substrate reaction is terminated by adding Stop Solution and the color turns yellow. The optical density (OD) is measured spectrophotometrically at a wavelength of 450 nm ± 2 nm. The OD value is proportional to the concentration of Human SAP. The concentration of Human SAP in samples can be calculated by comparing the OD of the samples to the standard curve.
| UniProt Protein Function: | APCS: Can interact with DNA and histones and may scavenge nuclear material released from damaged circulating cells. May also function as a calcium-dependent lectin. SAP is a precursor of amyloid component P which is found in basement membrane and associated with amyloid deposits. Belongs to the pentaxin family. |
| UniProt Protein Details: | Protein type:Secreted; Secreted, signal peptide; Chaperone Chromosomal Location of Human Ortholog: 1q21-q23 Cellular Component: extracellular matrix; extracellular space; protein complex; extracellular region; nucleus Molecular Function:complement component C1q binding; unfolded protein binding; virion binding; calcium ion binding; carbohydrate binding Biological Process: protein folding; negative regulation of virion penetration into host cell; negative regulation of acute inflammatory response; acute-phase response; innate immune response; negative regulation of monocyte differentiation; chaperone-mediated protein complex assembly; negative regulation of viral reproduction |
| NCBI Summary: | The protein encoded by this gene is a glycoprotein, belonging to the pentraxin family of proteins, which has a characteristic pentameric organization. These family members have considerable sequence homology which is thought to be the result of gene duplication. The binding of the encoded protein to proteins in the pathological amyloid cross-beta fold suggests its possible role as a chaperone. This protein is also thought to control the degradation of chromatin. It has been demonstrated that this protein binds to apoptotic cells at an early stage, which raises the possibility that it is involved in dealing with apoptotic cells in vivo. [provided by RefSeq, Sep 2008] |
| UniProt Code: | P02743 |
| NCBI GenInfo Identifier: | 730704 |
| NCBI Gene ID: | 325 |
| NCBI Accession: | P02743. 2 |
| UniProt Related Accession: | P02743 |
| Molecular Weight: | 223 |
| NCBI Full Name: | Serum amyloid P-component |
| NCBI Synonym Full Names: | amyloid P component, serum |
| NCBI Official Symbol: | APCS |
| NCBI Official Synonym Symbols: | SAP; PTX2; HEL-S-92n |
| NCBI Protein Information: | serum amyloid P-component; pentaxin-related; 9. 5S alpha-1-glycoprotein; epididymis secretory sperm binding protein Li 92n |
| UniProt Protein Name: | Serum amyloid P-component |
| UniProt Synonym Protein Names: | 9. 5S alpha-1-glycoproteinSerum amyloid P-component(1-203) |
| UniProt Gene Name: | APCS |
| UniProt Entry Name: | SAMP_HUMAN |
As the OD values of the standard curve may vary according to the conditions of the actual assay performance (e. g. operator, pipetting technique, washing technique or temperature effects), the operator should establish a standard curve for each test. Typical standard curve and data is provided below for reference only.
| Concentration (ng/mL) | O.D | Average | Corrected |
| 400 | 2.377 2.429 | 2.403 | 2.348 |
| 200 | 1.507 1.563 | 1.535 | 1.48 |
| 100 | 0.887 0.851 | 0.869 | 0.814 |
| 50 | 0.476 0.486 | 0.481 | 0.426 |
| 25 | 0.274 0.254 | 0.264 | 0.209 |
| 12.5 | 0.154 0.154 | 0.154 | 0.099 |
| 6.25 | 0.103 0.109 | 0.106 | 0.051 |
| 0 | 0.05 0.06 | 0.055 | -- |
Precision
Intra-assay Precision (Precision within an assay): 3 samples with low, mid range and high level Human SAP were tested 20 times on one plate, respectively.
Inter-assay Precision (Precision between assays): 3 samples with low, mid range and high level Human SAP were tested on 3 different plates, 20 replicates in each plate.
| Intra-assay Precision | Inter-assay Precision | |||||
| Sample | 1 | 2 | 3 | 1 | 2 | 3 |
| n | 20 | 20 | 20 | 20 | 20 | 20 |
| Mean (ng/mL) | 20.75 | 55.89 | 182.02 | 21.47 | 56.47 | 166.58 |
| Standard deviation | 1.31 | 2.91 | 8.90 | 1.43 | 2.95 | 6.36 |
| C V (%) | 6.31 | 5.21 | 4.89 | 6.66 | 5.22 | 3.82 |
Recovery
The recovery of Human SAP spiked at three different levels in samples throughout the range of the assay was evaluated in various matrices.
| Sample Type | Range (%) | Average Recovery (%) |
| Serum (n=5) | 90-101 | 96 |
| EDTA plasma (n=5) | 89-101 | 95 |
| Cell culture media (n=5) | 89-104 | 95 |
Linearity
Samples were spiked with high concentrations of Human SAP and diluted with Reference Standard & Sample Diluent to produce samples with values within the range of the assay.
| Serum (n=5) | EDTA plasma (n=5) | Cell culture media (n=5) | ||
| 1:2 | Range (%) | 94-107 | 90-104 | 86-96 |
| Average (%) | 102 | 96 | 91 | |
| 1:4 | Range (%) | 92-105 | 84-96 | 82-95 |
| Average (%) | 99 | 91 | 88 | |
| 1:8 | Range (%) | 89-104 | 84-98 | 84-96 |
| Average (%) | 96 | 90 | 90 | |
| 1:16 | Range (%) | 90-106 | 80-93 | 86-102 |
| Average (%) | 97 | 87 | 93 |
An unopened kit can be stored at 4°C for 1 month. If the kit is not used within 1 month, store the items separately according to the following conditions once the kit is received.
| Item | Specifications | Storage |
| Micro ELISA Plate(Dismountable) | 8 wells ×12 strips | -20°C, 6 months |
| Reference Standard | 2 vials | |
| Concentrated Biotinylated Detection Ab (100×) | 1 vial, 120 µL | |
| Concentrated HRP Conjugate (100×) | 1 vial, 120 µL | -20°C(shading light), 6 months |
| Reference Standard & Sample Diluent | 1 vial, 20 mL | 4°C, 6 months |
| Biotinylated Detection Ab Diluent | 1 vial, 14 mL | |
| HRP Conjugate Diluent | 1 vial, 14 mL | |
| Concentrated Wash Buffer (25×) | 1 vial, 30 mL | |
| Substrate Reagent | 1 vial, 10 mL | 4°C(shading light) |
| Stop Solution | 1 vial, 10 mL | 4°C |
| Plate Sealer | 5 pieces | |
| Product Description | 1 copy | |
| Certificate of Analysis | 1 copy |
- Set standard, test sample and control (zero) wells on the pre-coated plate and record theirpositions. It is recommended to measure each standard and sample in duplicate. Note: addall solutions to the bottom of the plate wells while avoiding contact with the well walls. Ensuresolutions do not foam when adding to the wells.
- Aliquot 100 µL of standard solutions into the standard wells.
- Add 100 µL of Sample / Standard dilution buffer into the control (zero) well.
- Add 100 µL of properly diluted sample (serum, plasma, tissue homogenates and otherbiological fluids) into test sample wells.
- Cover the plate with the sealer provided in the kit and incubate for 90 min at 37 °C.
- Aspirate the liquid from each well, do not wash. Immediately add 100 µL of BiotinylatedDetection Ab working solution to each well. Cover the plate with a plate seal and gently mix. Incubate for 1 hour at 37 °C.
- Aspirate or decant the solution from the plate and add 350 µL of wash buffer to each welland incubate for 1-2 minutes at room temperature. Aspirate the solution from each well andclap the plate on absorbent filter paper to dry. Repeat this process 3 times. Note: a microplatewasher can be used in this step and other wash steps.
- Add 100 µL of HRP Conjugate working solution to each well. Cover with a plate seal andincubate for 30 min at 37 °C.
- Aspirate or decant the solution from each well. Repeat the wash process for five times asconducted in step 7.
- Add 90 µL of Substrate Reagent to each well. Cover with a new plate seal and incubate forapproximately 15 min at 37 °C. Protect the plate from light. Note: the reaction time can beshortened or extended according to the actual color change, but not by more than 30min.
- Add 50 µL of Stop Solution to each well. Note: Adding the stop solution should be done inthe same order as the substrate solution.
- Determine the optical density (OD value) of each well immediately with a microplate readerset at 450 nm.
