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| Number | Title | Issue Date |
| 4108603 | Method for rapid analysis of hemoglobin variants by high speed liquid chromatography A method for analysis of hemoglobin variants by high speed liquid chromatography and, more particularly, by ion-exchange chromatography. Through the use of high flow rates and pressures, the hemoglobin variants can be rapidly forced through the separation... | 08/22/1978 |
| 4086631 | Hematocrit measurement in an automatic hematology analyzer In a hematology analyzer, peaks of pulses indicative of red blood cells in a sample during a count are detected. Peak detecting means produce a gate signal connected to gate means which couple a portion of each pulse in the time vicinity of its peak to in... | 04/25/1978 |
| 4077772 | Method for the determination of hemoglobin in trace amounts An improved technique for determining the presence of hemoglobin, having increased sensitivity, is provided by bringing the material to be tested into contact with an acidic solution of tetramethylbenzidine and hydrogen peroxide to form a mixture, allowin... | 03/07/1978 |
| 4076419 | Method and apparatus for hematology A predetermined number of small latex beads is provided in the vacuum capsule of a Vacutainer. After blood is drawn into the capsule, the capsule is agitated to mix the blood and beads into a homogeneous suspension. A smear or spun slide is prepared of th... | 02/28/1978 |
| 4071317 | Test composition and device for determining peroxidatively active substances and process for preparing same A test composition is disclosed which is useful in determining the presence of a peroxidatively active substance, such as hemoglobin, in a test sample. The composition comprises an organic hydroperoxide, an indicator capable of producing a detectable resp... | 01/31/1978 |
| 4071318 | Test composition and device for determining peroxidatively active substances A test composition and device are disclosed for determining the presence of peroxidatively active substances, such as hemoglobin, in a test sample. Also disclosed is a one-dip method for preparing the device. The test composition comprises: An organic hydroper... | 01/31/1978 |
| 4071321 | Test composition and device for determining peroxidatively active substances A test composition, device, and method for determining the presence of a peroxidatively active substance in a sample are disclosed. The composition comprises A. an organic hydroperoxide, B. an indicator capable of producing a detectable response in the presenc... | 01/31/1978 |
| 4071891 | Electronic calculator - register for hematology differentials An electronic tabulator for computing and displaying running totals of six different cells as well as a running total of the combined cell count. Means are also provided for dividing the individual cell count by the total cell count to express the individ... | 01/31/1978 |
| 4063894 | Test strip for the detection of occult blood in excreta A test strip for detecting the presence of occult blood in excreta such as urine or feces or body fluid, which strip comprises a bibulous or porous material impregnated with a chromogen, a hydroperoxide and, as a sensitizer, a thiazole compound of the for... | 12/20/1977 |
| 4059407 | Disposable chemical indicators A disposable indicator is disclosed which is useful for the measurement of ketones, proteins including albumin and uric acid in biological fluids. The instrument registers the concentration of substance in a given biological fluid with indicia which are d... | 11/22/1977 |
| 4057394 | Test device and method for determining blood hemoglobin A test device and method are provided for determining the hemoglobin content of blood. The test device comprises a substantially opaque light reflecting matrix having a refractive index significantly different from the refractive index of blood. In use, a... | 11/08/1977 |
| 4046514 | Test device and method for determining a component in a sample A test device and method for determining the presence of a component in a sample are disclosed, as well as a method for making the device. The device utilizes a reactant system which produces a detectable response upon contact with the sample component, t... | 09/06/1977 |
| 4042329 | Method and device for detecting cholesterol A disposable indicator which is useful for the measurement of chemical substances in biological fluids. The instrument registers the concentration of substance in a given biological fluid with indicia which are directly readable in a convenient notation s... | 08/16/1977 |
| 4035150 | Test for occult blood in an emulsified aqueous/organic system A method and test of detecting occult blood in a stool or other physiologic fluid sample which offers novelty in that the reaction is carried out in the organic phase selected from the group consisting of methylene dichloride, petroleum ether, and dioxane... | 07/12/1977 |
| 4030888 | Automatic blood analyzer A fully automatic system is disclosed for determining the seven blood parameters, red blood counts (RBC), hematocrit (HCT), white blood counts (WBC), mean corpuscular hemoglobin (MCH), mean corpuscular volume (MCV) and mean corpuscular hemoglobin concentr... | 06/21/1977 |
| 4027971 | Method of simultaneously counting blood cells An analytical apparatus includes means for simultaneously counting the quantity of blood cells, either erythrocytes or leucocytes, suspended in a predetermined quantity of fluid comprising a blood fraction as well as for determining the quantity of a chem... | 06/07/1977 |
| 4017261 | Biological diagnostic test strip and method of producing same Diagnostic test strips for the qualitative detection and semi-quantitative estimation of blood and hemoglobin in biological products include a reagent area comprising an acid buffer having a pH within the range of 2.5-5.0, a chromogen, a wetting agent, an... | 04/12/1977 |
| 4013417 | Analyzer for the determination of hemoglobin and other related compounds in whole blood and hemoglobin solutions This specification describes a new analyzer for the determination of total hemoglobin; percent oxyhemoglobin, deoxyhemoglobin, methmoglobin, sulfhemoglobin; and oxygen capacity in a micro sample (5 to 10 μl) of hole human blood. The essential components ... | 03/22/1977 |
| 4005984 | Diagnostic composition and method of using the same A diagnostic composition comprising a mixture of a lubricant and chemical reagents for the detection of occult blood components in stools is inserted through the anus into the rectum and removed, whereby there is carried with the composition a specimen of... | 02/01/1977 |
| 3997470 | Surfactant containing reagent formulations for assaying biological specimens and methods of preparing same A solid, water-soluble substantially anhydrous, storage-stable reagent formulation for use in conducting a clinical diagnostic test on a biological specimen is provided. The reagent formulation comprises a mixture containing a reagent capable of participa... | 12/14/1976 |
| 3992150 | Method and equipment for speedy preparation of test liquids A cuvet is prepared for test analysis of a substance by placing a predetermined volume of a reagent liquid in a cuvet and then using a pipette or capillary tube for taking up a predetermined volume of the test substance by capillary action. Then the charg... | 11/16/1976 |
| 3986833 | Test composition, device, and method for the detection of peroxidatively active substances Improved test compositions, devices and methods are provided for detecting peroxidatively active substances in body fluids, excreta and the like. In the type of test compositions including an indicator capable of being oxidized in the presence of a peroxi... | 10/19/1976 |
| 3975161 | Biological diagnostic test strip Diagnostic test strips for the qualitative detection and semi-quantitative estimation of blood and hemoglobin in biological products include a reagent area comprising an organic hydroperoxide or salt thereof, a chromagen and a novel agent capable of accel... | 08/17/1976 |
| 3964865 | Lyophilized human hemoglobin standard for colorimetric determination of total hemoglobin A preweighed vial of lyophilized methemoglobin (ferrihemoglobin) provides a simple, stable, reproducible standard for colorimetric determination of total hemoglobin concentration in whole blood by the cyanmethemoglobin method. Conversion of the standard a... | 06/22/1976 |
| 3950133 | Reagent formulations for assaying biological specimens and methods of preparing and using same A solid, water-soluble substantially anhydrous, storage-stable reagent formulation for use in conducting a clinical diagnostic test on a biological specimen is provided. The reagent formulation comprises a mixture containing a reagent capable of participa... | 04/13/1976 |
