Factors Affecting the Passive Hemagglutination Titration: Dilution Loops, Titration Trays, Vibration, Diluents1

Factors affecting the passive hemagglutination titration: dilution loops, titration trays, vibration, diluents.

Serial dilution with Takatsy loops resulted in exaggerated passive hemagglutination titers with most of the anti-bovine serum albumin sera tested. It appears that certain types of agglutinins adhere to the loop surface and are released only gradually. This adherence, or carry-over effect, was prevented by presoaking loops in gelatin or gelatin-rabbit serum-albumin solutions. Hemolysins did not ...

Coulometric Titration with Electrogenerated Tin(II). Titration of Platinum(IV)

Daytime CPAP Titration *

Objective: Continuous positive airway pressure (CPAP) is the treatment of choice for patients diagnosed with severe obstructive sleep apnea (OSA). The implementation of CPAP therapy has traditionally been based on full-night titration studies or split-night protocols. This study compared a group of patients who received a regular nocturnal CPAP titration with patients who received a daytime CPA...

Accelerated Titration Designs

A decade ago, investigators in oncology had a clear interest in modifications to the standard phase 1 design to make it more efficient, to treat fewer patients at non-toxic dose levels (which may be less efficacious), and to increase the precision of phase 2 dose recommendations. This was the conclusion of the 1996 joint meeting of the U.S. National Cancer Institute and the European Organizatio...

An automated titration system

Nevertheless there are two fundamentally different ways [2] of identifying sets of data. First, the cumulative collection of test results may be checked for plausibility. Mislabelled [3] results will be recognised if they differ greatly from those recorded earlier. The method, however, is not very effective as Sheiner et al [16] have shown. A Delta check method, [4] controlled by a computer, di...