cis-pyro
Cis-Pyro (Technetium Tc-99m Pyrophosphate Kit) is a medication supplied as an injection.
Technetium Tc-99m Pyrophosphate Kit · by Sun Pharm Inds Inc
Key facts
- Active ingredient
- Technetium Tc-99m Pyrophosphate Kit
- Form
- Injectable
- Type
- Prescription (Rx)
- Brand or generic
- Brand-name
- Manufacturer
- Sun Pharm Inds Inc
- FDA application
- NDA019039
What is Cis-Pyro?
From the FDA label:Kit for the Preparation of Technetium Tc 99m Pyrophosphate Injection is a multidose reaction vial which contains the sterile, non-pyrogenic, non-radioactive ingredients necessary to produce Technetium Tc 99m Pyrophosphate Injection for diagnostic use by intravenous injection. Each 10 mL vial contains 12.0 mg of sodium pyrophosphate, 2.8 mg minimum stannous tin as stannous chloride dihydrate and 4.9 mg maximum total tin as stannous chloride dihydrate; pH is adjusted to 5.3-5.7 with hydrochloric acid prior to lyophilization. No bacteriostatic preservative is present. Sealed under nitrogen. The chemical names are: (1) Diphosphoric acid, Ditin (2 + ) salt; (2) Ditin (2 + ) pyrophosphate (4 - ). The structural formula is: When a solution of sterile, non-pyrogenic, oxidant-free isotonic Sodium Pertechnetate Tc 99m Injection U.S.P. is added to the vial, Technetium Tc 99m Pyrophosphate Injection is formed for intravenous injection. When a solution of sterile, non-pyrogenic, isotonic saline is added to the vial, it forms a blood pool imaging agent when Sodium Pertechnetate Tc 99m Injection is injected intravenously 30 minutes after the intravenous administration of the non-radioactive reconstituted Kit for the Preparation of Technetium Tc 99m Pyrophosphate Injection. The precise structure of Technetium Tc 99m Pyrophosphate Injection is not known at this time. Structural Formula…
How to use
After preparation with oxidant-free Sodium Pertechnetate Tc 99m Injection, the suggested dose range of Technetium Tc 99m Pyrophosphate Injection in the average ADULT patient (70 kg) is: Bone Imaging - 185-555 megabecquerels (5-15 mCi) Cardiac Imaging - 370-555 megabecquerels (10-15 mCi) The suggested dose range of the non-radioactive reconstituted Kit for the Preparation of Technetium Tc 99m Pyrophosphate Injection in the average ADULT patient (70 kg) is: Blood Imaging - Administer not less than one-third nor more than the total contents of one vial [555 - 740 megabecquerels (15-20mCi) of Pertechnetate Tc 99m Injection]. Bone and Cardiac Imaging Technetium Tc 99m Pyrophosphate Injection is injected intravenously over a 10 to 20 second period. For optimal results, bone imaging should be done 1 to 6 hours following administration. Cardiac imaging should be done 30 to 90 minutes following administration. The acute myocardial infarct can be visualized from 24 hours to 6 days following onset of symptoms, with maximum localization at 48 to 72 hours. Cardiac imaging should be done with a gamma scintillation camera. It is recommended that images be made of the anterior, left anterior oblique and left lateral projections. Blood Pool Imaging Kit for the Preparation of Technetium Tc 99m Pyrophosphate Injection may be reconstituted with sterile, non-pyrogenic isotonic saline containing no…
Side effects
Some hypersensitivity reactions have been associated with pyrophosphate use.
Warnings
Important safety information
As an adjunct in the diagnosis of confirmed myocardial infarction (ECG and serum enzymes positive), the incidence of false negative images has been found to be 6 percent. False negative images can also occur if made prior to 24 hours in the evolutionary phase of the infarct or after 6 days in the resolution phase. In a limited study involving 22 patients in whom the ECG was positive and serum enzymes questionable or negative, but in whom the final diagnosis of acute myocardial infarction was made, the incidence of false negative images was 23 percent. The incidence of false positive images has been found to be 7 to 9 percent. False positive images have also been reported following coronary by-pass graft surgery, in unstable angina pectoris, old myocardial infarcts and in cardiac contusions. Preliminary reports indicate impairment of brain scans using Sodium Pertechnetate Tc99m Injection which have been preceded by a bone scan using an agent containing stannous ions. The impairment may result in false positive or false negative brain scans. It is recommended, where feasible, that brain scans precede bone imaging procedures. Alternately, a brain imaging agent such as Technetium Tc 99m Pentetate Injection may be employed. The biodistribution of technetium Tc 99m pyrophosphate may be altered in the presence of high levels of certain cations (iron, calcium, and aluminum). This may result in reduced uptake of radionuclide in the skeleton and increased extraosseal uptake, which may potentially degrade imaging quality. High levels of these cations may be caused by concomitant medications or medical conditions (e.g., iron overload, hypercalcemia, etc.). Most cases were observed after iron infusion. (See PRECAUTIONS, Drug Interactions .)
Who should not take Cis-Pyro
None known.
Dosage forms
Injectable
The forms currently marketed in the U.S., per the FDA National Drug Code Directory.
Ways to save
Ask for the generic
Same active ingredient, far cheaper. Is there a generic? →
Request a 90-day supply
Bulk fills usually lower the per-dose price vs monthly refills.
Use copay cards
Manufacturer copay cards & patient-assistance programs — especially for brand drugs.
Compare alternatives
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Frequently asked questions
- Is there a coupon or discount for Cis-Pyro?
- pharmaranks is an independent ratings site, not a pharmacy — we don't issue coupons or sell Cis-Pyro. To pay less, ask your prescriber or pharmacist whether a generic equivalent exists, check the manufacturer's copay/savings card and patient-assistance program, and compare a pharmacy discount card against your insurance copay. Prices vary by pharmacy, insurance, and location, so always confirm at the counter. This is general reference, not medical or financial advice.
- Who makes Cis-Pyro?
- Cis-Pyro is marketed by Sun Pharm Inds Inc. You can see Sun Pharm Inds Inc's full profile, rating, and other products on pharmaranks.
- Is Cis-Pyro a brand-name or generic drug?
- Cis-Pyro is a brand-name product with the active ingredient Technetium Tc-99m Pyrophosphate Kit.
- Is Cis-Pyro available over the counter?
- No. Cis-Pyro is a prescription (Rx) medication in the US — you need a prescription from a licensed clinician (in person or via telehealth); it isn't sold over the counter. For some conditions there are OTC alternatives — ask your pharmacist.
- What forms does Cis-Pyro come in?
- Cis-Pyro is currently marketed as injectable, per the FDA's National Drug Code Directory.
- Is Cis-Pyro FDA-registered?
- Cis-Pyro is on record with the U.S. FDA under application number NDA019039. You can verify this on its official FDA label.
- Is Cis-Pyro safe?
- There's no single safe-or-not verdict, and we don't yet have a composite recall-safety score for Cis-Pyro. Review its FDA-label side effects and warnings below, and always consult a licensed professional.
- What are the side effects of Cis-Pyro?
- Cis-Pyro's side effects are taken directly from its FDA label. From the label: Some hypersensitivity reactions have been associated with pyrophosphate use. Both common and serious reactions are documented in full on this page. This is general reference from the FDA, not medical advice — always consult a professional.
Clinical content sourced from the FDA label via openFDA (U.S. FDA). View the FDA label on DailyMed → Provided for general reference only — not medical advice. Always consult a licensed professional and the current prescribing information.
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