JOHN OWEN, M.D.; EREN PAYNE, R.T.; KELVIN CARSTAIRS, M.B.
To the editor: We wish to draw attention to the problem of erroneous results of activated partial thromboplastin times (aPTT) when plasma samples from patients on heparin are tested with the Lancer CoagulyzerTm. The errors can be large enough to interfere with appropriate therapy.
The Coagulyzer is an automated clot detector with a turntable capable of holding 60 samples, and it has two automatic reagent pipettes, positioned eight stations apart; six of these are heated to 37 °C. When the machine is set to the aPTT mode, the first pipette delivers the aPTT reagent (in our laboratory, General Diagnostics [Morris
Learn more about subscription options.
Register Now for a free account.
OWEN J, PAYNE E, CARSTAIRS K. Erroneous Activated Partial Thromboplastin Time. Ann Intern Med. 1978;89:146–147. doi: 10.7326/0003-4819-89-1-146_2
Download citation file:
Published: Ann Intern Med. 1978;89(1):146-147.
Copyright © 2017 American College of Physicians. All Rights Reserved.
Print ISSN: 0003-4819 | Online ISSN: 1539-3704
Conditions of Use
This PDF is available to Subscribers Only