It is generally conceded that even if the opsonic test is eventually proved to be of great value as a diagnostic aid and as a guide to therapeusis, its somewhat tedious and exacting technic restricts its use to those who are especially trained in laboratory work, or to those who have assistants so trained. I have recognized the necessity of simplifying, if possible, this technic, thus rendering it more useful to the investigator, even if it is not made so that the average clinician can use it.
Wright has held the opinion that the leucocytes from one individual are equally as good phagocytes as those from any other person. This may be true. But it rather looks reasonable to suppose that the white blood corpuscles might be influenced by blood conditions, as, for instance, an acute toxemia, and hence would not functionate in a normal manner. At any rate, the
BROWN OH. SOME MODIFICATIONS OF THE TECHNIC OF THE OPSONIC INDEX TESTS.A PRELIMINARY REPORT.. JAMA. 1908;L(8):602–603. doi:10.1001/jama.1908.25310340030002