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Rat Follistatin ELISA Kit

SKU:
RTFI00108
Product Type:
ELISA Kit
Size:
96 Assays
Uniprot:
P21674
Sensitivity:
0.094ng/ml
Range:
0.156-10ng/ml
ELISA Type:
Sandwich
Synonyms:
Fst, Follistatin
Reactivity:
Rat
$779
Frequently bought together:

Description

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Rat Follistatin ELISA Kit

The Rat Follistatin ELISA Kit is specifically designed for the precise measurement of follistatin levels in rat serum, plasma, and cell culture supernatants. This kit offers exceptional sensitivity and specificity, guaranteeing dependable and consistent results for various research purposes. Follistatin is a key protein known for its role in regulating reproductive processes and muscle growth. It also acts as an antagonist of activin, a protein involved in the control of cell growth and proliferation. Increased levels of follistatin have been associated with various health conditions, including infertility and muscle disorders, making it a valuable biomarker for investigating these conditions and potential therapeutic interventions.

Whether studying reproductive biology, muscle development, or related diseases, the Rat Follistatin ELISA Kit provides researchers with a powerful tool for accurate quantification and analysis of follistatin levels in rat samples. Order now and elevate your research capabilities with this advanced ELISA kit from Assay Genie.

Product Name:Rat Fst (Follistatin) ELISA Kit
Product Code:RTFI00108
Size:96 Assays
Target:Rat Fst
Alias:Fst, Follistatin
Reactivity:Rat
Detection Method:Sandwich ELISA, Double Antibody
Sensitivity:0.094ng/ml
Range:0.156-10ng/ml
Storage:4°C for 6 months
Note:For Research Use Only
Recovery:Matrices listed below were spiked with certain level of Rat Fst and the recovery rates were calculated by comparing the measured value to the expected amount of Rat Fst in samples.
MatrixRecovery range(%)Average(%)
serum(n=5)85-10593
EDTA plasma(n=5)87-10294
UFH plasma(n=5)91-10196
Linearity:The linearity of the kit was assayed by testing samples spiked with appropriate concentration of Rat Fst and their serial dilutions. The results were demonstrated by the percentage of calculated concentration to the expected.
Sample1:21:41:8
serum(n=5)90-102%85-101%85-104%
EDTA plasma(n=5)82-97%86-99%84-99%
UFH plasma(n=5)85-100%80-95%85-98%
Intra-Assay:CV <8%
Inter-Assay:CV <10%
Uniprot:P21674
UniProt Protein Function:FST: Binds directly to activin and functions as an activin antagonist. Specific inhibitor of the biosynthesis and secretion of pituitary follicle stimulating hormone (FSH)
UniProt Protein Details:

Protein type:Secreted; Secreted, signal peptide

Cellular Component: cytoplasm; extracellular region; nucleus

Molecular Function:heparan sulfate proteoglycan binding; protein binding; activin binding

Biological Process: positive regulation of hair follicle development; BMP signaling pathway; negative regulation of activin receptor signaling pathway; negative regulation of cell differentiation; hair follicle morphogenesis; gamete generation; hemopoietic progenitor cell differentiation; negative regulation of transcription from RNA polymerase II promoter; keratinocyte proliferation; skeletal development; pattern specification process; female gonad development; odontogenesis of dentine-containing teeth; negative regulation of follicle-stimulating hormone secretion

NCBI Summary:binds activin and inhibits activin-mediated signaling pathways [RGD, Feb 2006]
UniProt Code:P21674
NCBI GenInfo Identifier:6978857
NCBI Gene ID:24373
NCBI Accession:NP_036693.1
UniProt Secondary Accession:P21674,Q80XW7,
UniProt Related Accession:P21674
Molecular Weight:37,838 Da
NCBI Full Name:follistatin
NCBI Synonym Full Names:follistatin
NCBI Official Symbol:Fst  
NCBI Official Synonym Symbols:FOL1; Fst-288; RATFOL1  
NCBI Protein Information:follistatin
UniProt Protein Name:Follistatin
UniProt Synonym Protein Names:Activin-binding protein
Protein Family:Follistatin
UniProt Gene Name:Fst  
UniProt Entry Name:FST_RAT
StepProcedure
1. Set standard, test sample and control (zero) wells on the pre-coated plate respectively, and then, record their positions. It is recommended to measure each standard and sample in duplicate. Wash plate 2 times before adding standard, sample and control (zero) wells!
2.Aliquot 0.1ml standard solutions into the standard wells.
3. Add 0.1 ml of Sample / Standard dilution buffer into the control (zero) well.
4. Add 0.1 ml of properly diluted sample ( Human serum, plasma, tissue homogenates and other biological fluids.) into test sample wells.
5.Seal the plate with a cover and incubate at 37°C for 90 min.
6. Remove the cover and discard the plate content, clap the plate on the absorbent filter papers or other absorbent material. Do NOT let the wells completely dry at any time. Wash plate X2.
7. Add 0.1 ml of Biotin- detection antibody working solution into the above wells (standard, test sample & zero wells). Add the solution at the bottom of each well without touching the side wall.
8.Seal the plate with a cover and incubate at 37°C for 60 min.
9. Remove the cover, and wash plate 3 times with Wash buffer. Let wash buffer rest in wells for 1 min between each wash.
10. Add 0.1 ml of SABC working solution into each well, cover the plate and incubate at 37°C for 30 min.
11. Remove the cover and wash plate 5 times with Wash buffer, and each time let the wash buffer stay in the wells for 1-2 min.
12. Add 90 µL of TMB substrate into each well, cover the plate and incubate at 37°C in dark within 10-20 min. (Note: This incubation time is for reference use only, the optimal time should be determined by end user.) And the shades of blue can be seen in the first 3-4 wells (with most concentrated standard solutions), the other wells show no obvious color.
13. Add 50 µL of Stop solution into each well and mix thoroughly. The color changes into yellow immediately.
14. Read the O.D. absorbance at 450 nm in a microplate reader immediately after adding the stop solution.

When carrying out an ELISA assay it is important to prepare your samples in order to achieve the best possible results. Below we have a list of procedures for the preparation of samples for different sample types.

Sample Type Protocol
Serum:

If using serum separator tubes, allow samples to clot for 30 minutes at room temperature. Centrifuge for 10 minutes at 1,000x g. Collect the serum fraction and assay promptly or aliquot and store the samples at -80°C. Avoid multiple freeze-thaw cycles.

If serum separator tubes are not being used, allow samples to clotovernight at 2-8°C. Centrifuge for 10 minutes at 1,000x g. Removeserum and assay promptly or aliquot and store the samples at-80°C. Avoid multiple freeze-thaw cycles.

Plasma: Collect plasma using EDTA or heparin as an anti-coagulant. Centrifuge samples at 4°C for 15 mins at 1000 × g within 30 mins of collection. Collect the plasma fraction and assay promptly or aliquot and store the samples at -80°C. Avoid multiple freeze-thaw cycles.Note: Over haemolysed samples are not suitable for use with this kit.
Urine & Cerebrospinal Fluid: Collect the urine (mid-stream) in a sterile container, centrifuge for 20 mins at 2000-3000 rpm. Remove supernatant and assay immediately. If any precipitation is detected, repeat the centrifugation step. A similar protocol can be used for cerebrospinal fluid.
Cell Culture Supernatant: Collect the cell culture media by pipette, followed by centrifugation at 4°C for 20 mins at 1500 rpm. Collect the clear supernatant and assay immediately.
Cell Lysates: Solubilize cells in lysis buffer and allow to sit on ice for 30 minutes. Centrifuge tubes at 14,000 x g for 5 minutes to remove insoluble material. Aliquot the supernatant into a new tube and discard the remaining whole cell extract. Quantify total protein concentration using a total protein assay. Assay immediately or aliquot and store at ≤ -20°C.
Tissue Homogenates: The preparation of tissue homogenates will vary depending upon tissue type. Rinse tissue with 1X PBS to remove excess blood & homogenizein 20ml of 1X PBS (including protease inhibitors) and store overnight at ≤ -20°C. Two freeze-thaw cycles are required to break the cell membranes. To further disrupt the cell membranes you can sonicate the samples. Centrifuge homogenates for 5 mins at 5000xg. Remove the supernatant and assay immediately or aliquot and store at -20°C or-80°C.
Tissue Lysates: Rinse tissue with PBS, cut into 1-2 mm pieces, and homogenize with a tissue homogenizer in PBS. Add an equal volume of RIPA buffer containing protease inhibitors and lyse tissues at room temperature for 30 minutes with gentle agitation. Centrifuge to remove debris. Quantify total protein concentration using a total protein assay. Assay immediately or aliquot and store at ≤ -20 °C.
Breast Milk: Collect milk samples and centrifuge at 10,000 x g for 60 min at 4°C. Aliquot the supernatant and assay. For long term use, store samples at -80°C. Minimize freeze/thaw cycles.

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