Sec. 82-578. - Periodic check on sterile technique.
(a) Where blood is collected in an open system, that is, where the blood container is entered, at least one container of such blood that upon visual examination appears normal shall be tested each month between the 18th and 24th day after collection, as a continuing check on technique of blood collection as follows:
(1) The test shall be performed with a total sample of no less than ten milliliters of blood and a total volume of fluid thioglycollate or thioglycollate broth medium ten times the volume of the sample of blood.
(2) The test sample shall be inoculated into one or more test vessels in a ratio of blood to medium of one-to-ten for each vessel, mixed thoroughly, incubated for seven to nine days at a temperature of 30 degrees to 32 degrees Celsius, and examined for evidence of growth of microorganisms every workday throughout the test period.
(3) On the third, fourth or fifth day at least one milliliter of material from each test vessel shall be subcultured in additional test vessels containing the same culture medium and in such proportion as will permit significant visual inspection, mixed thoroughly, incubated for seven to nine days at a temperature of 30 degrees to 32 degrees Celsius and examined for evidence of growth of microorganisms every workday throughout the test period.
(4) If growth is observed in any test vessel, the test shall be repeated to rule out faulty test procedure, using another sample of blood from either:
a. The container from which the initial test sample was taken;
b. The residual cells or plasma from that blood; or
c. Two different containers of blood, each 18 to 24 days old and each tested separately.
(5) The formula for fluid thioglycollate medium shall be as prescribed in this chapter and the formula for thioglycollate broth medium shall be as prescribed in this chapter.
(6) Media and design of container shall meet the requirements prescribed in this chapter.
(7) In lieu of performing one test using an incubation temperature of 30 degrees to 32 degrees Celsius, two tests may be performed, each in all respects as prescribed in this subsection, one at an incubation temperature of 18 degrees to 22 degrees Celsius and one at an incubation temperature of 35 degrees to 37 degrees Celsius.
(8) A different test may be performed provided that prior to the performance of such test a processor submits data which the director finds adequate to establish that the different test is equal or superior to the test herein prescribed as a check on sterile technique and makes the finding a matter of official record.
(Code 1956, § 29-124(b))