US4501816A
Expired / Lapsed
US
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Method of determining immunoglobulin levels in mammals
Assignee: Individual
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Filing: 1982-09-30
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Granted: 1985-02-26
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Expires: 2002-09-30
Abstract
Abstract A method of determining the presence of abnormal immunoglobulin levels in animal body fluids involves (a) forming a reaction mixture of a body fluid and an effective amount of an appropriate aldehyde; (b) timing the rate of reaction of the aldehyde to gel formation; and (c) comparing the rate of reaction of the reaction mixture to a known rate of reaction of a known mixture of the same aldehyde and body fluid containing a known quantity of an immunoglobulin.
Inventors
- 👤 Aberra Molla
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 04:09
CPC Classifications
G; G01; G01N; G01N33/00; G01N33/48; G01N33/50; G01N33/68; G01N33/6854
Claims Analysis
Total Claims: 14
Claim 1
Independent Claim
99 words
A method of determining immunoglobulin levels in the body fluids of a mammal, said method comprising: (a) forming a reaction mixture of a body fluid and an aldehyde wherein the concentration of said aldehyde by weight to body fluid by volume is in excess of about 6.25 mg/ml and wherein said aldehyde is effective as a gelling agent; (b) determining the positive gelling time; and (c) comparing the positive gelling time of the reaction mixture to a known positive gelling time of a known mixture of the same aldehyde and body fluid containing a known quantity of an immunoglobulin.
Claim 2
Independent Claim
99 words
A method of determining immunoglobulin levels in the body fluids of a mammal, said method comprising: (a) forming a reaction mixture of a body fluid and an aldehyde wherein the concentration of said aldehyde by weight to body fluid by volume is in excess of about 6.25 mg/ml and wherein said aldehyde is effective as a gelling agent; (b) determining the positive gelling time; and (c) comparing the positive gelling time of the reaction mixture to a known positive gelling time of a known mixture of the same aldehyde and body fluid containing a known quantity of an immunoglobulin.
Claim 3
Dependent Claim
25 words
The method of claim 1 wherein the body fluid is chosen from the group consisting of whole blood, blood serum, plasma, urine and cerebrospinal fluid.
Claim 4
Dependent Claim
14 words
The method of claim 1 wherein the body fluid is derived from an animal.
Claim 5
Dependent Claim
10 words
The method of claim 1 wherein the aldehyde is glutaraldehyde.
Claim 6
Dependent Claim
24 words
The method of claim 2 wherein the body fluid is whole blood and the concentration of glutaraldehyde is sufficient to act as an anticoagulant.
Claim 7
Dependent Claim
21 words
The method of claim 5, wherein the effective concentration of glutaraldeyde is on the order of 12.5 mg/ml to 25.0 mg/ml.
Claim 8
Dependent Claim
25 words
The method of claim 4 wherein the body fluid is chosen from the group consisting of colostrum, colostral whey, milk, milk whey and mixtures thereof.
Claim 9
Dependent Claim
37 words
The method of claim 7 wherein the body fluid is colostrum and wherein the effective amount of glutaraldehyde by weight to colostrum by volume is from about 6.25 mg/ml to about 37.5 mg/ml in the reaction mixture.
Claim 10
Dependent Claim
39 words
The method of claim 7 wherein the body fluid is colostral whey, and wherein the effective amount of glutaraldehyde by weight to colostral whey by volume is from about 6.25 mg/ml to about 25.0 mg/ml in the reaction mixture.
Claim 11
Independent Claim
109 words
The method of determining immunoglobulin levels in the body fluids of an animal wherein said body fluids have not been separated into components comprising: (a) forming a reaction mixture of a body fluid and glutaraldehyde wherein the concentration of said glutaraldehyde by weight to body fluid by volume is in excess of about 6.25 mg/ml and wherein said glutaraldehyde is effective both as a gelling agent and an anticoagulant; (b) determining the positive gelling time; and (c) comparing the positive gelling time of the reaction mixture to a known positive gelling time of a known mixture of said glutaraldehyde and body fluid containing a known quantity of an immunoglobulin.
Claim 12
Independent Claim
109 words
The method of determining immunoglobulin levels in the body fluids of an animal wherein said body fluids have not been separated into components comprising: (a) forming a reaction mixture of a body fluid and glutaraldehyde wherein the concentration of said glutaraldehyde by weight to body fluid by volume is in excess of about 6.25 mg/ml and wherein said glutaraldehyde is effective both as a gelling agent and an anticoagulant; (b) determining the positive gelling time; and (c) comparing the positive gelling time of the reaction mixture to a known positive gelling time of a known mixture of said glutaraldehyde and body fluid containing a known quantity of an immunoglobulin.
Claim 13
Dependent Claim
23 words
The method of claim 10 wherein the body fluid is selected from the group consisting of colostrum, colostral whey, milk, and mixtures thereof.
Claim 14
Dependent Claim
37 words
The method of claim 11 wherein the body fluid is colostrum and wherein the effective amount of glutaraldehyde by weight to colostrum by volume is from about 6.25 mg/ml to about 37.5 mg/ml in the reaction mixture.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1988-02-26 | 1988-08-27 | 1989-02-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1992-02-26 | 1992-08-27 | 1993-02-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1996-02-26 | 1996-08-27 | 1997-02-26 | $7700.00 | Window Closed / Lapsed |