Carry-over in automatic analysers

Carry-over in automatic analysers

Selectivity and random-access in automatic analysers

Progress in automation in clinical chemistry hasfeatured in recent years a change from rigid to very flexible instruments. The latest instruments are able to perform on each sample only those tests requested, and often do so in a random sequence. The technological aspects of this progress in instrument design are described in this paper (these include computerization ofanalytical steps, multipl...

Sexual Signaling: Climatic Carry-Over

A long term study of warblers in the Himalayas reveals a surprising contrast in the effects of warm springs as opposed to warm summers on a signaling trait, emphasizing the need to consider year-round influences of the environment on morphological variation.

Carry-over biases in clinical pharmacology.

If the effect of a treatment carries on after the treatment is withdrawn then the response to a second treatment may well be due in part to the previous treatment. This so called carry-over effect may bias any clinical trial in which subjects are tested more than once. Cross-over studies can be routinely checked for this bias. In other study designs, however, common sense and alertness for unus...

Comparison of seven serum assays on four automatic analysers

Serum enzyme assays used on four different analysers (Hitachi 737, Hitachi 705, Cobas-bio and RA-2X) were compared by determining the activity of seven different enzymes (AST, ALT, LD, ALP, GGT, CK and AMS). Performance checks (quality control procedure) and replications (the study of the total analytic imprecision and of its components) were conducted and the methods were compared by linear re...