Biological Standards

A ‘biological’ in WHO documents is defined as “a substance which cannot be fully characterized by physico-chemical means alone, and which therefore requires the use of some form of bioassay”. In essence, a biological standard is a positive reference sample that is included in a biological assay to ensure that it is functioning correctly. For vaccine evaluation, this would usually be an antibody. Biological standards are used in assays that determine the purity, potency and identity of complex biological materials such as vaccines. They also have important applications in the standardization of nucleic acid-based tests, including real-time PCR, and serology assays used in epidemiology and clinical trials to evaluate vaccine efficacy. A biological standard that is common to all assays allows for calibration and harmonization of assay data.

As a supplier of isotope labeled products in the industry, Creative Proteomics offers more than 10,000 products labeled with different isotopes of carbon, hydrogen, nitrogen and oxygen. Creative Proteomics supplies stable isotope labeled and unlabeled beta-Agonists such as 5-Fluorouracil-13C4-15N2, Testosterone-1,2-D2, Cortisol-9,11,12,12-D4 and Progesterone-2,3,4-13C3. Custom synthesis of isotope labeled biological standards is also available to meet our customers’ research needs.


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Cat# Product Name Price
CPIL103273(+/-)-CATECHIN (2,3,4-13C3, 99%)INQUIRY
CPIL103275(+/-)-EPICATECHIN (CP 97% ) (2,3,4-13C3 ,99%)INQUIRY
CPIL220591(±)12(13)-EpOME-d4INQUIRY
CPIL220613(±)14(15)-EET-d11INQUIRY
CPIL221071(±)5(6)-EET-d11INQUIRY
CPIL106100[Ring-13C6]-3,4-Dihydroxyphenylacetic acidINQUIRY
CPIL1032511,2,4-TRIAZOLE (3,5-13C2, 99%; 1,2,4-15N3, 98%)INQUIRY
CPIL1033191,3-DIAMINOBENZENE (CP 95%) (13C6, 99%)INQUIRY
CPIL1032291,3-DIMETHYLURIC ACID (2,4,5,6-13C4, 99%; 1,3,9-15N3, 98%)INQUIRY
CPIL1032321,7-DIMETHYLURIC ACID (2,4,5,6-13C4, 99%; 1,3,9-15N3, 98%)INQUIRY
CPIL1032881,7-DIMETHYLXANTHINE (PARAXATHINE) (DIMETHYL-D6, 98%)INQUIRY
CPIL10341511-DEOXYCORTISOL (21,21-D2, 96%)INQUIRY
CPIL22058611β-Prostaglandin F2α-d4INQUIRY
CPIL20498712(S)-HETE-d8INQUIRY
CPIL22059713,14-dihydro-15-keto Prostaglandin E2-d4INQUIRY
CPIL22061815-deoxy-Δ12,14-Prostaglandin J2-d4INQUIRY
CPIL10335117A-HYDROXYPROGESTERONE (2,3,4-13C3,98%) 1000 UG/ML IN METHANOLINQUIRY
CPIL10340917-ALPHA-ETHYNYLESTRADIOL (2,4,16,16-D4, 97-98%)INQUIRY
CPILC221361117-phenyl trinor Prostaglandin F2α-d4INQUIRY
CPIL10328718-HYDROXYCORTICOSTERONE (9,11,12,12-D4,98%) CHEM. PURITY 95%INQUIRY
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