Technetium Tc 99m Apcitide Injection »Technetium Tc 99m Apcitide Injection is a sterile aqueous solution for intravenous injection that contains 99mTc in the form of an apcitide complex.It contains not less than 90.0percent and not more than 110.0percent of the labeled amount of 99mTc as the apcitide complex expressed in megabecquerels per mL(or in millicuries per mL)at the time indicated in the labeling.Other chemical forms of radioactivity do not exceed 10.0percent of the total radioactivity.It may contain reducing agents,stabilizing agents,and buffers.It contains no antimicrobial agents. Packaging and storage— Preserve in single-dose containers at controlled room temperature. Labeling— Label it to include the following,in addition to the information specified for Labelingunder Injections á1ñ:the time and date of calibration;the amount of 99mTc as labeled apcitide complex expressed as total megabecquerels per mL(or millicuries per mL)at the time of calibration;the expiration date and time;the storage temperature;and the statement “Caution—Radioactive Material”.The labeling indicates that in making dosage calculations,correction is to be made for radioactive decay,and also indicates that the radioactive half-life of 99mTc is 6.0hours. USP Reference standards á11ñ USP Endotoxin RS. Bacterial endotoxins á85ñ: not more than 175/VUSP Endotoxin Unit per mLof the Injection,in which Vis the maximum recommended total dose,in mL,at the expiration date or time. pHá791ñ: between 6.0and 8.0. Radiochemical purity— Separately apply equal volumes (about 10µL)of Injection,accurately measured,about 1.0cm from the bottom of each of two 2-cm ×10-cm instant chromatographic silica gel strips.(Do not allow to dry.)Immediately develop the chromatograms by ascending chromatography (see Chromatography á621ñ),until the solvents reach the top of the strips,using saturated sodium chloride solution as the developing solvent for one strip (Strip 1)and water for the other strip (Strip 2).Remove the strips,and allow to air-dry.Cut Strip 1at an RFvalue of about 0.75,and separately record the counts for each portion in a dose calibrator.Calculate the percentage of Tc 99m pertechnetate and Tc 99m glucoheptonate (hydrophilic impurities)in the portion of Injection taken by the formula: 100CS/(CS+PS), in which CSis the count obtained from the top portion of Strip 1;and PSis the count obtained from the bottom portion of Strip 1.Cut Strip 2at an RFvalue of about 0.25,and separately record the counts for each portion in a dose calibrator.Calculate the percentage of Tc 99m immobile impurities in the portion of Injection taken by the formula: 100PW/(CW+PW), in which PWis the count obtained from the bottom portion of Strip 2;and CWis the count obtained from the top portion of Strip 2:the sum of hydrophilic and immobile impurities is not more than 10%. Other requirements— It meets the requirements for Radionuclide identificationand Radionuclidic purityunder Sodium Pertechnetate Tc 99m Injection.It also meets the requirements under Injections á1ñ,except that it is not subject to the recommendation on Volume in Containerand that it may be distributed or dispensed prior to completion of the test for Sterility,the latter test being started on the date of manufacture. Assay for radioactivity á821ñ Using a suitable counting assembly (see Selection of a Counting Assembly),determine the radioactivity,in MBq (or µCi)per mL,of Injection by use of a calibrated system. Auxiliary Information— Staff Liaison:Andrzej Wilk,Ph.D.,Senior Scientific Associate Expert Committee:(RMI)Radiopharmaceuticals and Medical Imaging Agents USP28–NF23Page 1852 Phone Number:1-301-816-8305