Bioequivalence and Bioavailability Forum • Duplicate LLOQ and ULOQ

Duplicate LLOQ and ULOQ [Bioanalytics]

posted by Helmut – Vienna, Austria, 2020-05-27 18:30 (2212 d 11:35 ago) – Posting: # 21484
Views: 16,999

Dear Ohlbe,

❝ Most frequent: use the first result only. If, and only if it fails (more than 20% deviation at the LLOQ, 15% at the ULOQ): exclude it and use the second. The aim being of course to avoid having to truncate the curve in case of failure.

❝

❝ I see this less and less often. Not sure why (guess: some FDA inspectors did not like it).

Count me in. If you analyzed duplicates, use them.

—
Dif-tor heh smusma 🖖🏼 Довге життя Україна!
Helmut Schütz

The quality of responses received is directly proportional to the quality of the question asked. 🚮
Science Quotes

Complete thread:

An example of IS response. Need your helps. Shuanghe 2020-05-26 12:56
- An example of IS response. Need your helps. Sukalpa Biswas 2020-05-26 13:49
  - An example of IS response. Need your helps. Shuanghe 2020-05-26 16:32
  - An example of IS response. Need your helps. Ohlbe 2020-05-26 17:46
- An example of IS response. Need your helps. Ohlbe 2020-05-26 14:42
  - Placement of CC Helmut 2020-05-26 15:35
    - An example of IS response. Shuanghe 2020-05-26 16:32
      - An example of IS response. Ohlbe 2020-05-26 17:27
    - Placement of CC Ohlbe 2020-05-26 17:32
      - Placement of CC Helmut 2020-05-26 19:03
        
        Duplicate LLOQ and ULOQ Ohlbe 2020-05-26 19:43
        
        Duplicate LLOQ and ULOQHelmut 2020-05-27 16:30
- An example of IS response. Need your helps. ElMaestro 2020-05-26 15:44
- An example of IS response. Need your helps. ksreekanth 2020-07-06 13:37
- Trend analysis as per recent USFDA guideline dshah 2020-08-01 07:32
  - Only for QCs; encouraged ≠ required Helmut 2020-08-01 14:13
    - Only for QCs; encouraged ≠ required dshah 2020-08-03 09:17
      - Deviation from the mean response Helmut 2020-08-07 13:28
    - Only for QCs; encouraged ≠ required Shuanghe 2020-08-03 13:56
      - Broken-stick regression Helmut 2020-08-04 18:04