Click image to see more details
Product Info Summary
| SKU: | EK1111 |
|---|---|
| Size: | 96 wells/kit, with removable strips. |
| Reactive Species: | Human |
| Application: | ELISA |
| Sample Types: | cell culture supernatants, serum and plasma (heparin, EDTA). |
Product info
Product Name
Human ICOS ELISA Kit PicoKine®
SKU/Catalog Number
EK1111
Size
96 wells/kit, with removable strips.
*Question: How many samples can I assay/run in this kit?
Description
Human ICOS ELISA Kit PicoKine® (96 Tests). Quantitate Human ICOS in cell culture supernatants, serum and plasma (heparin, EDTA). Sensitivity: 2pg/ml. The brand Picokine indicates this is a premium quality ELISA kit. Each Picokine kit delivers precise quantification, high sensitivity, and excellent reproducibility. Only our most reliable and effective kits qualify as Picokine, guaranteeing top-tier results for your assays.
Storage & Handling
Store at 4°C for 6 months, at -20°C for 12 months. Avoid multiple freeze-thaw cycles (Ships with gel ice, can store for up to 3 days in room temperature. Freeze upon receiving.)
Cite This Product
Human ICOS ELISA Kit PicoKine® (Boster Biological Technology, Pleasanton CA, USA, Catalog # EK1111)
Clonality of Antibodies
See Datasheet for details
Standard Protein
Expression system for standard: NS0; Immunogen sequence: E21-F141
Sensitivity
<2 pg/ml
Assay Range
62.5 pg/ml - 4,000 pg/ml
Standard Dilution Instructions
See datasheet of EK1111 for more details
Cross-reactivity
There is no detectable cross-reactivity with other relevant proteins.
Reactive Species
EK1111 is reactive to ICOS in Human samples
Validated Sample Types
cell culture supernatants, serum and plasma (heparin, EDTA).
Application Guarantee
EK1111 is guaranteed for ELISA in Human by Boster Guarantee
See how Boster Bio validate our ELISA kits: ELISA Validation Information
Background of ICOS
Inducible T-cell costimulator is an immune checkpoint protein that in humans is encoded by the ICOS gene. The protein encoded by this gene belongs to the CD28 and CTLA-4 cell-surface receptor family. It forms homodimers and plays an important role in cell-cell signaling, immune responses, and regulation of cell proliferation.
Kit Components
| Catalog Number | Description | Quantity |
|---|---|---|
| EK1111-CAP | Anti-Human ICOS Pre-coated 96-well strip microplate | 1 |
| EK1111-ST | Human ICOS Standard | 2 vials, 10 ng/tube |
| EK1111-DA | Human ICOS Biotinylated antibody (100x) | 100ul |
| AR1103 | Avidin-Biotin-Peroxidase Complex (100x) | 100ul |
| AR1106-1 | Sample Diluent | 30ml |
| AR1106-2 | Antibody Diluent | 12ml |
| AR1106-3 | Avidin-Biotin-Peroxidase Diluent | 12ml |
| AR1104 | Color Developing Reagent (TMB) | 10ml |
| AR1105 | Stop Solution | 10ml |
| AR1106-5 | Wash Buffer (25x) | 20ml |
| PLA-SEA | Adhesive plate sealers | 4 |
*The kit components are not available for individual purchase.
Materials Required But Not Included In Kit
- Microplate Reader capable of reading absorbance at 450nm.
- Incubator.
- Automated plate washer (optional).
- Pipettes and pipette tips capable of precisely dispensing 0.5 µl through 1 ml volumes of aqueous solutions.
- Multichannel pipettes are recommended for large amount of samples.
- Deionized or distilled water.
- 500ml graduated cylinders.
- Test tubes for dilution.
Data Examples, Quality Control Data & Sample Dilution
Validation Standard Curve O.D. At 450nm
| Concentration (pg/ml) | 0 | 62.5 | 125 | 250 | 500 | 1000 | 2000 | 4000 |
| O.D. | 0.171 | 0.258 | 0.284 | 0.406 | 0.607 | 1.057 | 1.493 | 2.055 |
Data Example Images
Click image to see more details
Human ICOS PicoKine ELISA Kit standard curve
Recommended Sample Dilution Ratios
According to our internal validation assays using this ELISA kit, to detect ICOS, Dilution ratio of 1:1, concentration in serum and plasma is less than the lowest standard, 62.5 pg/ml..
Intra Assay Consistency & Inter Assay Consistency
We measured random samples of Human ICOS ELISA Kit PicoKine® within the same batch/lot to ensure the consistency of the kits' performances. ELISA intra assay consistency is measured using wells from the same plate/assay kit. ELISA inter assay consistency is measured using wells from different plates from the same batch production/lot.
| Intra-Assay Precision | Inter-Assay Precision | |||||
|---|---|---|---|---|---|---|
| Sample | 1 | 2 | 3 | 1 | 2 | 3 |
| n | 16 | 16 | 16 | 24 | 24 | 24 |
| Mean (pg/ml) | 189 | 561 | 1066 | 198 | 531 | 1149 |
| Standard deviation | 13.41 | 22.44 | 52.23 | 16.83 | 27.61 | 58.59 |
| CV (%) | 7.1% | 4% | 4.9% | 8.5% | 5.2% | 5.1% |
Reproducibility
We ensure reproducibility by testing three samples with differing concentrations of ICOS in ELISA kits from four different production batches/lots.
| Lots | Lot 1 (pg/ml) | Lot 2 (pg/ml) | Lot 3 (pg/ml) | Lot 4 (pg/ml) | Mean (pg/ml) | Standard Deviation | CV (%) |
|---|---|---|---|---|---|---|---|
| Sample 1 | 189 | 189 | 191 | 192 | 190 | 1.29 | 0.6% |
| Sample 2 | 561 | 545 | 489 | 526 | 530 | 26.84 | 5% |
| Sample 3 | 1066 | 1100 | 974 | 1134 | 1068 | 59.62 | 5.5% |
Protein Target Info & Infographic
Gene/Protein Information For ICOS (Source: Uniprot.Org, NCBI)
Gene Name
ICOS
Full Name
Inducible T-cell costimulator
Weight
22.625kDa
Alternative Names
Inducible T-cell costimulator; Activation-inducible lymphocyte immunomediatory molecule; CD278; ICOS; AILIM ICOS AILIM, CD278, CVID1 inducible T cell costimulator inducible T-cell costimulator|activation-inducible lymphocyte immunomediatory molecule|inducible T-cell co-stimulator|inducible costimulator
*if product is indicated to react with multiple species, protein info is based on the gene entry specified above in "species".For more info on ICOS, check out the ICOS Infographic
We have 30,000+ of these available, one for each gene! check them out.
In this infographic you will see the following information for ICOS: database IDs, super-family, protein function, synonyms, molecular weight, chromosomal locations, tissues of expression, subcellular locations, post translational modifications, and related diseases, research areas & pathways. If you want to see more information included, or would like to contribute to it and be acknowledged, please contact us [email protected].
Specific Publications For Human ICOS ELISA Kit PicoKine® (EK1111)
Hello CJ!
No publications found for EK1111
*Do you have publications using this product? Share with us and receive a reward. Ask us for more details.
Recommended Resources
Here are featured tools and databases that you might find useful.
- Boster's Pathways Library
- Protein Databases
- Bioscience Research Protocol Resources
- Data Processing & Analysis Software
- Photo Editing Software
- Scientific Literature Resources
- Research Paper Management Tools
- Molecular Biology Software
- Primer Design Tools
- Bioinformatics Tools
- Phylogenetic Tree Analysis
Customer Reviews
Have you used Human ICOS ELISA Kit PicoKine®?
Submit a review and receive an Amazon gift card.
- $30 for a review with an image
0 Reviews For Human ICOS ELISA Kit PicoKine®
Customer Q&As
Have a question?
Find answers in Q&As, reviews.
Can't find your answer?
Submit your question
10 Customer Q&As for Human ICOS ELISA Kit PicoKine®
Question
Does EK1111 contain native human biological materials?
Verified customer
Asked: 2021-11-10
Answer
The Human ICOS ELISA Kit PicoKine® (EK1111) doesn't contain native human biological materials. doesn't contain native human biological materials.
Boster Scientific Support
Answered: 2021-11-11
Question
Q: how to thaw whole blood sample for ICOS ELISA after freezing?
K. Johnson
Verified customer
Asked: 2020-05-27
Answer
A: do not freeze and thaw whole blood. erythrocytes are fragile and, if frozen and thawed, will undergo hemolysis rendering the samples useless. To keep your blood samples to test ICOS for a later time, you should let the blood clot in glass tubes and collect the serum to freeze for later use.
Boster Scientific Support
Answered: 2020-05-27
Question
Q: is it okay to use citrate plasma as samples in Human ICOS Picokine® ELISA Kit (Catalog # EK1111)?
Verified Customer
Verified customer
Asked: 2020-05-22
Answer
A: Chelating agents such as EDTA, Heparin and Citrate can attach metal ions from the functional domain of ICOS causing degradation of its protein structure. ICOS may be denatured as a result and may compromise the assay's measurements. The chilating sites could also be too close to the epitopes a must for detection and block the antigen antibody reaction. We have tested the ICOS ELISA, treating samples with different anticoagulants and decided that heparin or EDTA can be used for treatment of blood/plasma samples. Do not use other anticoagulents when collecting samples.
Boster Scientific Support
Answered: 2020-05-22
Question
Q: What is the optimal O.D. value for ICOS ELISA kit? I performed your ICOS ELISA on serum samples. For my positive control, I received an O.D. value of 0.826, while my negative control received a value of 0.136. I obtained both of these controls from the ELISA kit, where your kit's typical data shows O.D. values much higher than my positive control and your background is lower. My samples O.D. values are around 0.225 and the highest is only 0.357. is it safe to say these samples contain ICOS even though the O.D. values are not very high?
Verified Customer
Verified customer
Asked: 2019-09-19
Answer
A: The absolute O.D. values may change according to incubation time. The more you incubate the higher the O.D. values are going to be. a point of focus should be is whether your sample O.D. values are statistically significantly higher than your blank values. in your example, you could extend your development time in the substrate incubation step to obtain higher O.D. values, as long as your negative controls' O.D. values are not increasing faster in relation to your positive controls. typically, a sample with O.D. value 2 standard deviations higher than your negative controls can be considered positive. We calculate the sensitivity of this ELISA kit by changeing cutoff O.D. value, calculated as the average of 20 negative controls plus 2 standard deviations of the 20 negative controls, into a concentration. in other words, when we claim this ICOS ELISA kit to have sensitivity of 2pg/ml, that means the minimum amount of ICOS that can be declared/interpreted as positive by the above standard is 2pg/ml.
Boster Scientific Support
Answered: 2019-09-19
Question
Q: can you suggest the dilution ratio of serum samples for detection of ICOS in Human serum? I am trying to measure a few analytes and it requires 100ul of diluted samples for each well. We have low serum quantitys so we like to dilute as much as possible.
W. Walker
Verified customer
Asked: 2019-02-06
Answer
A: having little idea about the physiological or pathological context of your samples we cannot recommend a dilution ratio without performing a pilot test with your samples. Here is how you can perform a pilot study on your own: perform a serial dilution of your samples on the ICOS ELISA kit to make sure you have a linear ascending curve followed by a plateau, which signifies the samples saturating the detection limit of the kit. Then you can pick the dilution ratios from samples in the linear part of the curve as your experimental dilution ratio.
If you are interested in using our ELISA service, you can also send us your sample and we will take care of everything for you. You can check our service details here: bosterbio.com/services/assay-services/ELISA-testing-service
Since you mentioned you have limited samples, our cost effective multiplex ELISA service would fit perfectly for your needs, where we can generate dozens of data points using as little as 25ul sample volume. Information on this service is also in the above link.
Boster Scientific Support
Answered: 2019-02-06
Question
Q: how do I analyze ELISA data? I have obtained ICOS level in serum.
Verified Customer
Verified customer
Asked: 2018-05-30
Answer
A: we recommend you this article on ELISA data analysis. bosterbio.com/ELISA-data-analysis-instructions. we also provide a convenient online tool that you can use to analyze ELISA data. bosterbio.com/biology-research-tools/ELISA-data-analysis-online
Boster Scientific Support
Answered: 2018-05-30
Question
Q: Can ICOS ELISA Kits be used with tissue homogenates (or other non-validated sample types)?
Verified Customer
Verified customer
Asked: 2018-04-11
Answer
A: Unfortunately, Boster Bio has not routinely validated tissue homogenates as a sample type for ELISA kits. This does not mean that ELISA kits are not suitable for other sample types than we have tested: it means further investigation is a must. One will need to perform a spike and recovery study to determine if an unvalidated sample type will work with a particular kit. To perform a spike and recovery experiment, one should divide a sample into two aliquots. In one of the aliquots, the user should spike in a known amount of the kit standard. a dilution series is performed comparing the spiked versus the unspiked sample. Generally, samples with expected recovery and linearity between 80-120% are considered acceptable. This method can be used to validate any sample type that has not been assessd by Boster Bio. for a more detailed spike and recovery protocol, please contact technical support.
Note: acceptable ranges should be determined individually by each laboratory. Additionally, technical support can help determine if a buffer component is not compatible with a given ELISA kit. please see the Citations tab on the product webpage for peer-reviewed papers utilizing a wide range of sample types. We also have an innovator's reward program where if the user validates our ELISA kits in applications or samples previously not validated by Boster Bio or other users, and share such information with us by submit a review, we will reward the user's efforts with a free antibody or ELISA kit from our catalog. Biocompare.com will also give $20 Amazon giftcard as an additional reward, if the review is submitted there as well.
Boster Scientific Support
Answered: 2018-04-11
Question
Q: for how much duration can samples (cell cultures, serum, and plasma) be stored and still be stable for quantification ICOS using the EK1111 Human ICOS Picokine® ELISA Kit?
Verified Customer
Verified customer
Asked: 2018-01-20
Answer
A: Boster Bio does not evaluate sample stability. Variations in sample collection, processing, and storage may affect the stabilityof samples. It is recommend to assay sample on priority basis collection when possible, or aliquot into single use volumes and store samples frozen. limit repetitive freeze-thaw cycles with the stored samples to avoid protein degradation.
Boster Scientific Support
Answered: 2018-01-20
Question
Q: is there any online tool I can use to streamline the data analysis for my ELISA results?
Verified Customer
Verified customer
Asked: 2017-07-26
Answer
A: We have a web based ELISA curve fitting (4pl) and data analysis tool. Please give it a try: bosterbio.com/biology-research-tools/ELISA-data-analysis-online. You can also consult our article on ELISA data analysis: bosterbio.com/ELISA-data-analysis-instructions
Boster Scientific Support
Answered: 2017-07-26
Question
Q: if the enzyme conjugated ICOS antibodies are mixed with the substrate, will that change the substrate into the enzymatic reaction product? Or the enzyme function is only activated when the antibody is attached with the ICOS antigen?
Verified Customer
Verified customer
Asked: 2016-03-12
Answer
A: The enzyme is always active. Avoid contaminating the substrate with enzyme prior to the incubation otherwise it compromises the assay with false positive signal.
Boster Scientific Support
Answered: 2016-03-12
