| US 7,604,778 B2 | ||
| Coded test tubes | ||
| Shari L. Dause, 3938 N. Paulina, Chicago, Ill. 60613 (US) | ||
| Filed on Jun. 30, 2006, as Appl. No. 11/479,229. | ||
| Prior Publication US 2008/0003148 A1, Jan. 03, 2008 | ||
| Int. Cl. B01L 3/00 (2006.01) | ||
| U.S. Cl. 422—102 | 12 Claims |
| 1. A specimen holding device, comprising:
a test tube having a cylindrical body with one end open and the other end closed;
a cap securable to said cylindrical body to close said open end, said cap having a selected color indicative of at least one
of a test to be performed on the specimen in the tube and a specimen additive in the tube; and
a content indicator secured to said tube and separate from said cap, said content indicator extending around said tube near
said tube open end and having said selected color, wherein said content indicator comprises a raised ring around said tube
cylindrical body, said raised rings being round in cross-section and abutting said care when said care closes said cylindrical
body open end;
wherein when in a position closing said container body open end, said cap covers a portion of said content indicator.
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