T. Kanazawa et al., REPRODUCIBILITY OF TC-99(M)-MAG3 CLEARANCE IN NORMAL VOLUNTEERS WITH THE 2-SAMPLE METHOD - COMPARISON WITH I-131 OIH, Nuclear medicine communications, 19(9), 1998, pp. 899-903
The aim of this study was to evaluate the reproducibility of Tc-99(m)-
mercaptoacetyltriglycine (Tc-99(m)-MAG3) clearance and to compare it w
ith that of I-131-orthoiodohippurate (I-131-OIH), which is widely used
in clinical practice. Twelve young healthy volunteers with a mean age
of 23.4 years (range 19-28) were enrolled in the study. The investiga
tions were repeated at an interval of 1 month under similar physiologi
cal conditions. Each volunteer received a simultaneous injection of Tc
-99(m)-MAG3 and I-131-OIH that was commercially available in an alread
y labelled form. Blood samples were obtained at 44 and 104 min post-in
jection. Clearance values were calculated using the two-sample method.
The mean (+/- S.D.) change from the first to the second measurement w
as -7.1 +/- 11.1% for Tc-99(m)-MAG3 and 1.7 +/- 13.6% for I-131- OIH.
There were no significant differences between the first and the second
measurements of Tc-99(m)-MAG3 and I-131-OIH clearance, respectively.
Tc-99(m)-MAG3 clearance was shown to be very similar to that of I-131-
OIH in healthy volunteers. ((C) 1998 Lippincott Williams & Wilkins).