Document 2RYaz0qJJjwmYpy5erVg5wbR6

December 27> 1944 19 Dr. K. A. Koerber, John T . Levis and Brothers C o ., 2545 Aramingo Avenue, Philadelphia, Pennsylvania. Dear D r . Koerber s I am sending you herewith the r e s u l t ^ o ^ o u r analyses on the blood samples of your patient Unfortunately these results do not permit us t o m a K ^ a n y v e r y satisfactory interpretation. The lead concentration in the blood is definitely above normal limits, but it is in that middle gx*ound which makes it rather uncertain. In view of the history that you have given me, I would be disposed to believe that this man has been continuing a mild and not very significant exposure to lead compounds. H o w e v e r , I would be much safer in making this interpretation If I had adequate results on urinary samples. As I pointed out elsewhere, the range of values obtained on blood Is rather narrow, whereas that on the urine is much wider and permits a much more precise Interpretation to be made. I would consider it advisable to obtain additional... samples on this man, both as a check on the possibility that the samples just analysed may have been slightly contaminated in the process of collection, and also as a means of giving an Interpretation of the course of a somewhat unusual and perhaps controversial case. For our own convenience In not carrying accounts, I am sending you herewith a bill to cover the cost of the analytical work. Cordially yours, FAK ef Enc. Robert "A."Kehoe,"M . D . Kt 0013774 Robert A . Kehoe College of Medicine Eden Avenue ' Cincinnati 19, Ohio December 27, 1944 ohn T. Levis and Brothers Co., 545 Aramingo Avenue, hiladelphia, Pennsylvania. Attention: Dr. K. A. Koerber Analysis of Blood for Lead 5.00 "aro c-t 0 013 /? 0 Sample of blood submit tod by Dr. Nenneth A. Koorber of the .John ?. Lewis and Pros. Company, 25I4.5 Aramingo Avenue, Philadelphia, Pennsylvania, for lead analysis. Blood An al ysi s Number hIj.A--6965 drams 20.0 Mg. Pb/lOO g. f.peotroGraphic c.07 Pd fchizone 0.0O KF 0013776 Sample Collected: 12-12~hliSampl Received: 12-lB-UJb, Sample Reported: 12-25-)(lt-