LOINC display name : Tubular extraction rate/1.73 sq M Isotopic (S/Bld) [Vol rate/Area];
LOINC long common name : Isotopic Tubular extraction rate/1.73 sq M [Volume Rate/Area] in Serum or Blood;
LOINC short name : Isotopic TER/1.73 sq M SerBld-ArVRat;
LOINC description : This test is for the tubular extraction rate (TER) based on the clearance of a radioisotope
(e.g., 99mTc-MAG3). The TER can be calculated using various algorithms, including
continuous infusion, single injection, single sample, and the two-compartment model.
[PMID: 11545186]. Clearance calculation methods may differ for children [PMID:1831838].
Radioisotopes, such as 99mTc-MAG3, provide evidence of tubular clearance because 99mTc-MAG3
is selectively filtered by the renal tubule and not by glomerular filtration. Tc-99m
Mertiatide (99mTc-MAG3) is also a radiopharmaceutical used for renography [PMID:11545186].
To report the results of a renography study (and not TER measurement), use [LOINC:39746-3].;