Ibrahim Komeil
☆    

Egypt,
2019-10-19 04:18
(1622 d 10:12 ago)

Posting: # 20704
Views: 3,757
 

 Metformin and linaglibtin film coated tablet [Bioanalytics]

Hello

I am testing the bio equivalency between two products containing metformin 500 mg and linaglibtin 2.5 mg film coated tablet. my question is about bio-analysis of linaglibtin.

The validation method start the LLOQ of linaglibtin by 1ng/ml but i can't find any good results in test samples. So anyone have a previous experience with bio-analysis of linaglibtin.

Thanks in advance
hirenmistri
☆    

India,
2019-11-28 11:51
(1582 d 01:40 ago)

@ Ibrahim Komeil
Posting: # 20882
Views: 2,734
 

 Metformin and linaglibtin film coated tablet

Hi,
I have done bioanalysis of so many studies of metformin and linagliptin. I have not observed such issues.
There is no problem with stability of linagliptin in samples.

Our LLOQ is 0.1 ng/mL for 2.5 mg dose.

Time point selection is also playing role in getting adequate results.
Ibrahim Komeil
☆    

Egypt,
2019-11-28 16:48
(1581 d 20:42 ago)

@ hirenmistri
Posting: # 20888
Views: 2,662
 

 Metformin and linaglibtin film coated tablet

Hi

Thank you for your kind reply

Actually i face a problem in the bioanalysis for linaglibtin tablets, i optimized the LLOQ for Linaglibtin to 25 pg/ml and still i see low Cmax reaching 0.7 ng/ml. Additionally the terminal elimination phase is too low knowing that linaglibtin half life is approximately 100 hours while it appeared to be about 24 hours in my analysis

So i doubt about the method of linaglibtin extraction from plasma, so can you tell me which method did you use in sample preparation i think there is an issue here.

BR,

Ibrahim


Edit: Full quote removed. Please delete everything from the text of the original poster which is not necessary in understanding your answer; see also this post #5[Helmut]
UA Flag
Activity
 Admin contact
22,957 posts in 4,819 threads, 1,639 registered users;
104 visitors (0 registered, 104 guests [including 6 identified bots]).
Forum time: 13:31 CET (Europe/Vienna)

Nothing shows a lack of mathematical education more
than an overly precise calculation.    Carl Friedrich Gauß

The Bioequivalence and Bioavailability Forum is hosted by
BEBAC Ing. Helmut Schütz
HTML5