How long after Intrauterine Device (IUD) insertion should the strings be checked?

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Last updated: May 20, 2025View editorial policy

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From the Research

The first string check after IUD insertion should be done 4-6 weeks following the procedure. At this initial follow-up appointment, your healthcare provider will verify proper IUD placement and trim the strings if needed 1. After this initial check, you should self-check the strings once a month, typically after your period. To check the strings yourself, insert a clean finger into your vagina and feel for the thin threads near your cervix. Regular string checks are important because they help confirm the IUD remains properly positioned. If you cannot feel the strings, they feel longer or shorter than usual, or you experience pain, unusual bleeding, or signs of infection, contact your healthcare provider promptly as these may indicate IUD displacement or expulsion 2.

Some key points to consider:

  • The strings are designed to be felt only upon checking but shouldn't cause discomfort during daily activities or intercourse.
  • Ultrasound is a cost-effective, accurate, safe, and accessible imaging solution for the assessment of IUDs, especially in cases where the strings are not visible 1.
  • If IUD strings are not visible during gynecologic examination, ultrasound should be tried to locate the IUD and pelvic X-ray used only when ultrasound fails to locate the IUD 3.
  • Retained intrauterine devices with or without strings can often be safely removed in an office-based setting under ultrasound guidance at less cost than in the operating room, even in cases with embedded IUDs 4.

It's essential to follow up with your healthcare provider if you experience any unusual symptoms or concerns after IUD insertion. They can assess the situation and provide guidance on the best course of action.

References

Research

Ultrasound Assessment of the Intrauterine Device.

Obstetrics and gynecology clinics of North America, 2019

Research

Ultrasound-Guided Extraction of Intrauterine Devices With Nonvisible Threads: 254 Consecutive Cases: An Effective, Noninvasive Technique.

Journal of ultrasound in medicine : official journal of the American Institute of Ultrasound in Medicine, 2019

Professional Medical Disclaimer

This information is intended for healthcare professionals. Any medical decision-making should rely on clinical judgment and independently verified information. The content provided herein does not replace professional discretion and should be considered supplementary to established clinical guidelines. Healthcare providers should verify all information against primary literature and current practice standards before application in patient care. Dr.Oracle assumes no liability for clinical decisions based on this content.

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