Heparin Lock Flush

A very low concentration of heparin used to prevent blood clots from forming inside the IV catheter when it is not in use.

Dosage by Body Weight

Pediatric dose: 10 units/mL or 100 units/mL depending on the catheter type. Usually 1-2 mL used to flush the line.

Weight-based dosage tracking table for Heparin Lock Flush, including body weight, dose, frequency, and tracking notes.
Body Weight	Dose	Frequency	Tracking Notes
Any weight	10 to 100 units	After each use or every 8-12 hours	Not for systemic anticoagulation.

Injection (Low concentration)

Maintenance of patency of indwelling intravenous catheters (IV lines).

Heparin Lock Flush is listed as a generic drug name. Common branded medicines that may contain the same active ingredient include:

Yes. This medicine should be supplied or used only according to applicable prescription and regulatory requirements.

CAUTION

Heparin Lock Flush: Alcohol can increase bleeding risk or interfere with clotting control. Avoid or limit alcohol and seek medical advice.

CAUTION

Heparin Lock Flush: Use during pregnancy only under specialist direction; some blood-thinning medicines are unsafe in pregnancy.

SAFE IF PRESCRIBED

Heparin Lock Flush: Use while breastfeeding only with healthcare provider guidance and monitoring where needed.

SAFE

Heparin Lock Flush: Usually does not impair alertness, but avoid driving if bleeding, weakness, dizziness, or illness occurs.

CAUTION

Heparin Lock Flush: Liver disease can increase bleeding risk and affect clotting. Use only with medical monitoring.

CAUTION

Heparin Lock Flush: Kidney impairment can affect dosing or bleeding risk for some anticoagulants. Monitoring may be required.