87378-6

LOINC 2.82

Isotopic Tubular extraction rate/1.73 sq M [Volume Rate/Area] in Serum or Blood

Isotopic TER/1.73 sq M SerBld-ArVRat

Definition

  • 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].

Component

  • Tubular extraction rate/1.73 sq M

Specimen / system

  • Ser/Bld

Class

  • CHEM

Property

  • ArVRat

Scale

  • Qn

Method

  • Isotopic

Related names

  • Blood; BSA; Chemistry; Point in time; QNT; Quan; Quant; Quantitative; Random; SerBld; Serum; Serum or whole blood; Square Meter; SR; TER; Volume rate/area; Volume Rate/Ratio; WB; Whole blood

Index terms

  • Blood
  • BSA
  • Chemistry
  • Point in time
  • QNT
  • Quan
  • Quant
  • Quantitative
  • Random
  • SerBld
  • Serum
  • Serum or whole blood
  • Square Meter
  • SR
  • TER
  • Volume rate/area
  • Volume Rate/Ratio
  • WB
  • Whole blood