Radionuclide quality control test kit

• US 4,428,908 A
• Filed: 03/25/1982
• Issued: 01/31/1984
• Est. Priority Date: 06/16/1980
• Status: Expired due to Fees

• Current Assignee: Meredith A. Ashley, Sheldon J. Ashley
• Original Assignee: Meredith A. Ashley, Sheldon J. Ashley
• Inventors: Ashley, Sheldon J., Ashley, Meredith A.
• Primary Examiner(s): Marantz, Sidney
• Application Number:
  US06/361,748
• Time in Patent Office: 677 Days
• Field of Search: 422/56, 422/61, 210/658, 436/1, 436/39, 436/41, 436/57
• US Class Current: 422/430
• CPC Class Codes: G01N 30/90 Plate chromatography, e.g. thin layer or paper chromatography

Abstract

A radionuclide quality control test kit includes a disposable chromatography chamber. A premeasured amount of a solvent solution is provided in the chamber. A disposable test strip has spaced opposite first and second ends. The first end is immersible in the solvent solution in the chamber upon being spotted by a radiopharmaceutical to be tested to enable the solvent solution to ascend the strip to the second end whereat radiochemical impurities of the radiopharmaceutical migrating to the second end are radiologically countable to permit computation of such impurities.

Claims

1. A radionuclide quality control test kit for determining the radiochemical purity of radiopharmaceutical compounds, said test kit comprising

a disposable chromatography chamber;

a cap for closing said chromatography chamber to provide a saturated solvent atmosphere, said cap being removably affixed to said chamber;

a premeasured amount of solvent solution in the chamber, said solvent solution being dyed in accordance with a color code;

3. A radionuclide quality control test kit as claimed in claim 1, further comprising an additional disposable chromatography chamber and an additional premeasured amount of an additional solvent solution in the additional chamber, and wherein said first end of said test strip is immersible in the additional solvent solution in the additional chamber upon being spotted by a soluble radiopharmaceutical to be tested in a double solvent system to enable said additional solvent solution to ascend said strip to said second end, the soluble pure radiopharmaceutical migrating to said second end leaving the insoluble radiochemical impurities at said first end and being radiologically countable to permit computation of such impurities.

4. A radionuclide quality control test kit as claimed in claim 1, wherein said solvent solution consists of one or a combination of approximately 1.0 ml 85% methanol, methylethylketone, normal saline, acetone, acetonitrile, chloroform and water.

5. A radionuclide quality control test kit as claimed in claim 1, wherein said solvent solution comprises a dye marker for visually indicating the ascent of the solvent solution and of the test end point when said solvent solution and dye reach the second end of said strip, thereby functioning as a solvent front indicator.

6. A radionuclide quality control test kit as claimed in claim 1, wherein said desiccant component comprises a color indicator area for visually indicating the expiration of said test kit and said test strip by changing the color of said area in accordance with the moisture of the vial storing the test strip.

7. A radionuclide quality control test kit as claimed in claim 1, wherein said first line is provided at a predetermined relative front and determines separation distance of pure versus impure radiopharmaceutical compounds.

2. a disposable test strip having spaced opposite first and second ends, said first end being immersible in the solvent solution in said chamber upon being spotted by an insoluble radiopharmaceutical to be tested in a single solvent system to enable said solvent solution to ascend said strip to said second end whereat soluble radiochemical impurities of the radipharmaceutical migrating to said second end are radiologically countable to permit computation of such impurities, said test strip having a length between said first and second ends, a first line marked thereon in parallel relation with said first and second end equidistantly from said ends and a second line marked thereon in parallel relation with said first and second ends at approximately 1/5 the length of said strip from said first end whereat said test strip is spottable at said second line and said strip is cuttable along said first line to divide it into two strips of equal length for testing for impurities;

a vial having a removable cap for storing said strip; and

a color-indicating desiccant component sealed in said vial with said strip.