87378-6
LaboratoryIsotopic Tubular extraction rate/1.73 sq M [Volume Rate/Area] in Serum or Blood
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].
LOINC 6-Axis Classification
Component
Tubular extraction rate/1.73 sq M
Property
ArVRat
Time Aspect
Pt
System
Ser/Bld
Scale Type
Qn
Method Type
Isotopic
Details
Class
CHEM
Order/Observation
Both
Short Name
Isotopic TER/1.73 sq M SerBld-ArVRat
Display Name
Tubular extraction rate/1.73 sq M Isotopic (S/Bld) [Vol rate/Area]
Related Names
Frequently Asked Questions
What is LOINC code 87378-6?
LOINC code 87378-6 identifies "Isotopic Tubular extraction rate/1.73 sq M [Volume Rate/Area] in Serum or Blood". 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].
What does 87378-6 measure?
This code measures Tubular extraction rate/1.73 sq M in Ser/Bld. It belongs to the CHEM class in the LOINC classification.
What is LOINC?
LOINC (Logical Observation Identifiers Names and Codes) is a universal standard for identifying laboratory and clinical observations. It is maintained by the Regenstrief Institute and used worldwide for health data exchange.