After the initial thaw, the serum can be aliquoted in to single use vials and stored at -20°C. For more information, please refer to the following page:
https://www.sigmaaldrich.com/technical-documents/protocol/cell-culture-and-cell-culture-analysis/cell-culture-media-preparation/storing-and-thawing-serum
Seleccione un Tamaño
| Tamaño de envase | SKU | Disponibilidad | Precio |
|---|---|---|---|
| 20 mL | Póngase en contacto con nuestro Servicio de Atención al Cliente para disponibilidad | 115,00 € | |
| 100 mL | Póngase en contacto con nuestro Servicio de Atención al Cliente para disponibilidad | 259,00 € |
Acerca de este artículo
115,00 €
biological source
human male plasma (Type AB)
Quality Level
sterility
sterile-filtered
composition
hemoglobin, ≤30 mg/dL
origin
USA origin
technique(s)
cell culture | mammalian: suitable, cell culture | stem cell: suitable
impurities
≤10 EU/mL endotoxin
shipped in
dry ice
storage temp.
−20°C
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Este artículo | |||
|---|---|---|---|
| origin USA origin | origin USA origin | origin USA origin | origin USA origin |
| technique(s) cell culture | mammalian: suitable, cell culture | stem cell: suitable | technique(s) cell culture | mammalian: suitable | technique(s) cell culture | mammalian: suitable | technique(s) cell culture | mammalian: suitable, cell culture | stem cell: suitable |
| biological source human male plasma (Type AB) | biological source human male plasma (Type AB) | biological source human | biological source human |
| sterility sterile-filtered | sterility sterile-filtered | sterility sterile-filtered | sterility sterile-filtered |
| composition hemoglobin, ≤30 mg/dL | composition hemoglobin, ≤20 mg/dL | composition - | composition Hemoglobin, ≤25 mg/dL |
| impurities ≤10 EU/mL endotoxin | impurities ≤10 EU/mL endotoxin | impurities (mycoplasma tested, virus tested), ≤10 EU/mL endotoxin | impurities ≤10 EU/mL Endotoxin |
Application
Biochem/physiol Actions
Packaging
Analysis Note
Other Notes
Legal Information
Disclaimer
Related product
Clase de almacenamiento
10 - Combustible liquids
wgk
WGK 3
flash_point_f
Not applicable
flash_point_c
Not applicable
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Artículos
Find answers to frequently asked questions (FAQs) about FBS and other serum products, and links to related products.
Learn about the impact of filtration on hematopoietic cell culture media containing vital T cell factors and other media components.
Número de artículo de comercio global
| SKU | GTIN |
|---|---|
| H4522-20ML | 04061833795507 |
| H4522-100ML | 04061838259622 |
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Once the product has been thawed, how should it be stored? How many times can be freezed and thawed?
1 respuesta-
¿Le ha resultado útil?
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Is this Human Serum stock in PBS or any specific buffer?
1 respuesta-
This product does not contain phosphate-buffered saline or any specific buffer.
¿Le ha resultado útil?
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What is the concentration of Mg2+ and Ca2+ in this serum (H4522)?
1 respuesta-
The magnesium levels are not determined for this serum product. The calcium levels are not tested on a lot-to-lot basis. However, historical information indicates calcium concentrations tend to range from 6.5 - 10 mg/dL.
¿Le ha resultado útil?
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What is the antibodies concentration in Product H4522, human serum?
1 respuesta-
The immunoglobulin concentration of this product is not measured. This is a pooled product from adult AB negative males. Based on information published in the Geigy Scientific Tables, the average immunoglobulin levels for adult males, ages 20 – 70, are as follows:
IgG
10.69 – 12.04 g./L
IgA
1.32 – 2.34 g/L
IgM (not age dependent)
0.77 g/L¿Le ha resultado útil?
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Il prodotto è stato testato per negatività a HSV?
1 respuesta-
Each donor is tested for and found non-reactive to Hepatitis B & C and non-reactive to Human Immunodeficiency Virus (HIV) antibody by ELISA. HSV is not on the list of agents that are tested. Nevertheless, products of human origin should be considered potentially infectious and handled accordingly. See the link below to review a sample or lot specific Certificate of Analysis for this product: https://www.sigmaaldrich.com/product/sigma/i4506#product-documentation
¿Le ha resultado útil?
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If this is "serum" derived from "plasma" the plasma would have contained anti-coagulant. To turn the plasma into serum it has to be clotted. Has this product been clotted to remove the fibrin? Or is it still in fact plasma?
1 respuesta-
The product has been clotted. Blood is collected and treated with citrate (anticoagulant) which inhibits clotting initially. The blood is then centrifuged. When the spin is complete, layers will appear which allow a differentiation between the cells and the plasma. The plasma is removed and calcium is added to activate the clotting cascade. The preparation is then centrifuged again and the result is a large clot which is pelleted to the bottom of the tube with a serum layer on top.
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Are Human Serum products H4522 and H6914 suitable for complement assays? Is there testing available for complement levels or activity?
1 respuesta-
Human Serum products H4522 and H6914 may not be suitable for complement assays when stored at -20°C due to potential degradation of complement activity. For complement assays, alternatives like S1764 (Complement sera human) and C9473 (Complement Serum Standard human) are recommended. It is advised to review the Certificates of Analysis (CoAs) for these products to ensure they meet the specific requirements of your complement assay
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Which human serum is recommend for a nucleic acid stability assay, specifically for incubating siRNA in serum to represent bloodstream kinetics?
1 respuesta-
The use of human serum for a nucleic acid stability assay has not been performed as it is not part of our lab's product characterization focus. However, the citation titled "Improving gene silencing of siRNAs via tricyclo-DNA modification, PMID: 21687522" suggest that product H4522 may be suitable for this application. It is recommended to refer to the publication for additional insights.
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What are the differences between serum and plasma-derived serum?
1 respuesta-
Whole blood serum is obtained by allowing natural clotting followed by filtration,lacking fibrinogen. Plasma-derived serum is obtained from non-clotted whole blood through centrifugation.
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What Biosafety Level would be suitable for human serum such as H4522, H5667, and H6914?
1 respuesta-
Human origin products from normal donors should be used at Biosafety Level 2 (BSL-2), which is suitable for handling moderate-risk agents causing human disease. Thus, treat these products as potentially infectious and handle accordingly.
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