Comparative Pharmacology
Head-to-head clinical analysis: MACROTEC versus SODIUM CHROMATE CR 51.
Peer-Reviewed Evidence
Head-to-head clinical analysis: MACROTEC versus SODIUM CHROMATE CR 51.
MACROTEC vs SODIUM CHROMATE CR 51
Comparing the clinical profiles, pharmacokinetic behaviors, and safety indices of these two therapeutic agents.
Not applicable for diagnostic use.
Radiolabeled sodium chromate (51Cr) binds to red blood cells, tagging them for survival studies. 51Cr emits gamma radiation, allowing detection and quantification of RBC mass and survival via scintillation counting or imaging.
5 mCi (185 MBq) intravenously as a single dose for lung perfusion imaging.
Intravenous injection, 5-30 microcuries (0.185-1.11 MBq) as a single dose.
None Documented
None Documented
6 hours; prolonged in renal impairment (up to 30 hours in ESRD)
The biological half-life is approximately 27–30 days. Clinically, gradual clearance from blood and tissues occurs over weeks to months.
Renal: 95% as unchanged drug; biliary/fecal: <5% as metabolites
Primarily renal. Approximately 90% of absorbed dose is excreted in urine within 48 hours. Fecal excretion accounts for less than 5%.
Category C
Category C
Radiopharmaceutical
Radiopharmaceutical