Apparatus for measuring the amount of a component in a biological fluid
Abstract
Abstract An improved mode of preparing certain reagents utilized in the measurement of components of biological fluids. In the general mode contemplated, there is added to the biological fluid, which normally contain a binder (i.e. a protein) capable of binding the component to be measured, a combination of a component essentially similar to that which is to be measured as present in the biological fluid but modified to act as a tracer (by reason of its optical or radio-active properties) and an adsorbent. The tracer modified component is added in an amount greater than that capable of being bound by the binder present in the fluid. The adsorbent material is added to remove the unbound components, the adsorbent removed, and the amount of tracer in the liquid phase measured. The improvements comprise the use of a milder adsorbent then theretofore used and a modification in the construction of the vials to carry out the measurements.
Inventors
- 👤 L Mead
- 👤 M Deutsch
Bibliographic Details
Claims Analysis
Total Claims: 1References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-10-29 | 1977-04-30 | 1977-10-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-10-29 | 1981-04-30 | 1981-10-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-10-29 | 1985-04-30 | 1985-10-30 | $7700.00 | Window Closed / Lapsed |