Chemistry: analytical and immunological testing – Testing of catalyst
Reexamination Certificate
2006-04-25
2006-04-25
Smith, Lynette R. F. (Department: 1645)
Chemistry: analytical and immunological testing
Testing of catalyst
C435S007920, C514S588000
Reexamination Certificate
active
07033838
ABSTRACT:
The method for the diagnosis ofHelicobacter pyloriinfection by the oral administration of defined amounts of13C-labeled urea and examination for13C content of blood samples removed at a defined time is effected bya) removing from 0.1 to 0.6 ml of capillary blood from the finger or ear lob of a patient or venous blood of a patient, in both cases with an empty stomach before the beginning of the test;b) administering an exact amount of from 10 to 50 mg of13C-urea in aqueous solution with a pH value of 2 to 4 to the patient;c) again removing capillary or venous blood exactly after 10 to 15 min from the administration; andd) determining the13C content of the blood samples by isotope ratio mass spectrometry (IRMS), and deducing the presence ofHelicobacter pylorifrom the increase of the13C values.
REFERENCES:
patent: 5542419 (1996-08-01), Moulton-Barrett et al.
patent: 5928167 (1999-07-01), Wagner et al.
patent: 6113875 (2000-09-01), Nyström et al.
patent: 6171811 (2001-01-01), Becerro De Bengoa Vallejo
patent: 296 13 373 (1996-11-01), None
patent: 0 881 491 (1998-12-01), None
Chey et al.“The13C-Urea Blood Test Accurately Detects Active Helicobacter pylori Infection: A United States, Multicenter Trial”, American Journal of Gastroenterology,94, No. 6 (1999), 1522-1524.
BIOSIS Abstract 2000: 5261.80;Alimentary Pharmocology&Therapeutics, 14,Supp. 3, 12-22 (2000) (Vaira et al.).
Cutler, A.F. and Toskes, P., MD, “Comparison of [13C] Urea Blood Test to [13C] Urea Breath Test for the Diagnosis of Heliobacter pylori”, American Journal of Gasterology, 94,No. 4 (1999), 959-61.
EMBASE Abstract 1999197569, American Journal of Gastroenterology, 94, 1522-1524(1999) (Chey et al.).
Smith Lynette R. F.
Tongue Lakia J.
LandOfFree
Method for the diagnosis of Helicobacter pylori infection,... does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Method for the diagnosis of Helicobacter pylori infection,..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Method for the diagnosis of Helicobacter pylori infection,... will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-3615681