Leukocyte Esterase, Unsonicated

Product Name Whole Leukocyte Esterase
Source Human Leukocytes
Catalogue Number 341-10
Purity Blood Fraction
Form Liquid
Activity Elastase: 5.0 - 6.0 U/mL
Unit Definition One unit will catalyze the hydrolysis of one micromole of methoxy succinyl-alanine-proline-valine-p-nitroanilide per minute at 37°C and pH 7.5 (In the presence of 500 mM sodium chloride and 0.2% Triton X-100)
Dipstick Assay On lysing the leukocytes, 0.45 mL per liter of saline will give a positive reaction for leukocytes with Roche Chemstrip® 10 SG or Siemens Multistix® 10 SG test strips.
Formulation Suspension in 154 mM sodium chloride.
Appearance Milky, white to off-white suspension
Related Products 910-12 - Bilirubin Conjugate, Ditaurate, Sodium Salt
651-10 - Urobilinogen
343-10 - Esterase from porcine liver
Storage -20°C
Recertification 2 years
Infectious Disease Testing Negative or non-reactive at the donor level for anti-HIV 1 and 2, anti-HCV, HBsAg, HIV-1 (NAT), HBV (NAT), HCV (NAT), and syphilis by FDA approved methods.
Synonyms Unsonicated White Blood Cell Esterase, WBC Esterase