PAPP-A

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PAPP-A

Pregnancy Associated Plasma Protein A (PAPP-A) is a placental glycoprotein widely used as a key biomarker in first-trimester prenatal screening and risk assessment of chromosomal abnormalities. YBL's PAPP-A is isolated from human placenta and supplied in lyophilized form with high purity and validated biological activity. The product undergoes stringent viral marker testing, bioburden assessment, and quality control procedures, making it suitable for immunoassays, calibrators, controls, diagnostic assay development, and IVD manufacturing applications.

Parameter	Details
Source	Human Placenta
Application	Suitable for immunoassays, calibrators, controls, prenatal screening assays, maternal health biomarker research, diagnostic assay development, and PAPP-A test kit manufacturing.
Purity Analysis	SDS-PAGE (Non-Reducing): ≥85% – Major band at ~400 kDa; SDS-PAGE (Reducing): ≥85% – Major band at ~200 kDa
Immunological Activity	Roche Cobas (ECLIA): 216.38 mIU/vial
Form	Lyophilized powder prepared from aseptically filtered sample; 20 mM Ammonium Bicarbonate, pH 7.6 ± 0.3
Storage	Store at -20°C in working aliquots; avoid repeated freeze-thaw cycles after reconstitution
Bioburden	Negative
Viral Testing	HBsAg, Anti-HCV, Anti-HIV I & II: Negative (CLIA Approved Method); HIV-1, HBV & HCV DNA/RNA: Negative (PCR)
Reconstitution	Dissolve in 1.0 mL of 10 mM Tris Buffer (pH 7.4 ± 0.2) containing 150 mM NaCl to obtain a final concentration of approximately 0.97 mg/mL
Material Safety Note	Not for human or animal consumption. For in-vitro research and diagnostic manufacturing use only. Follow biosafety precautions and dispose of material according to local environmental regulations.

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PAPP-A

PAPP-A

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