Skip to main content

Table 5 Endotoxin concentrations in two bTSH products (Sigma Aldrich, 3 lot numbers; Calbiochem Merck 1 lot number) and rhTSH (2 lot numbers) as determined by Limulus amebocyte lysate (LAL) kinetic chromogenic assay

From: Characterization of recombinant human and bovine thyroid-stimulating hormone preparations by mass spectrometry and determination of their endotoxin content

Sample

LOT

Endotoxin/ml

Endotoxin/mg

bTSH

069 K1588

434 EU/ml

80.4 EU/mg

(Sigma Aldrich)

119 K1583

158.4 EU/ml

29.3 EU/mg

 

040 M1246

133.6 EU/ml

24.7 EU/mg

bTSH

D00106386

622 EU/ml

12.4 EU/mg

(Calbiochem Merck)

rhTSH

A8035H40

0.15 EU/ml

0.14 EU/mg

(Genzyme GmbH)

A8063H19

<0.05 EU/ml

<0.04 EU/mg