Quantitative blood collection vial and system and method for determining hematocrit
AssigneeDaxor Corp.
InventorsJonathan Feldschuh, Adam Michael Cable, Jackson Rieb, Linda J. Cooper
Life of this patent
Estimating the term…
Abstract
A device is presented for storing, transporting, measuring, and collecting blood, having the properties of a precisely determined volume, and a geometry suitable for the entire device to be efficiently placed in the counting chamber of a detector, such as the counting well of a gamma counter. Also presented are a system and method for determining the Hematocrit (Hct) of a subject.
Claims25
A vial of precise volume, comprising an ingress with a standard fitting for accepting fluid and a valve to prevent backflow or outflow of the fluid, and an egress incorporating a membrane which passes air but retains fluid.
A method for determining the Hematocrit (Hct) of a subject, comprising the steps of:
- a) introducing a tracer into the blood of the subject that marks the plasma component of the blood, and allowing sufficient time for said tracer to become equally distributed throughout the blood of the subject;
- b) collecting a sample of the subject's blood;
- c) measuring Awb, the activity of the tracer in the whole blood sample from step (b);
- d) extracting plasma from the whole blood sample from step (b);
- e) measuring Ap, the activity of the tracer in the plasma sample from step (d);
- and
- f) calculating the Hct of the subject using the equation
- Hct
- =
- 1
- -
- A
- wb
- A
- p
- .
Dependencies are inferred from the claim text.