
Scrub Typhus - IgM antibody









The Scrub Typhus - IgM antibody is a blood test used to detect immunoglobulin M (IgM) antibodies. These antibodies are specific to Orientia tsutsugamushi, the bacteria responsible for scrub typhus. This test helps identify recent or active infections, allowing for early medical intervention.













Understanding Scrub Typhus - IgM antibody
Scrub typhus is a vector-borne disease transmitted to humans through the bite of infected larval mites, commonly found in regions of heavy vegetation. It is a potentially severe febrile illness caused by the bacterium Orientia tsutsugamushi.
The Scrub Typhus - IgM antibody test helps detect IgM antibodies that appear in the blood during the early stages of infection. Since IgM is usually the first antibody produced by the immune system in response to the scrub typhus infection, its presence indicates a current or recent infection. This test uses the EIA (Enzyme Immunoassay) technique, which helps accurately detect the infection in its early stages, allowing timely treatment and better recovery outcomes.
This test is especially useful when a person shows symptoms suggestive of scrub typhus, such as fever, headache, muscle pain, or rash, particularly after traveling to or staying in regions where scrub typhus is common. This test also helps doctors support the clinical assessment of infection, treatment, reinfection or relapse, and the risk of serious complications like organ damage or meningitis.
Usually, no special preparation is needed for this test. Eat and drink as per the daily routine. However, providing the clinical history before giving the sample is preferred.
Test result ranges are approximate and may differ slightly between labs depending on the methodology and laboratory guidelines. Do not self-medicate and always consult a doctor to understand the test results correctly.
Please note: This is an outsourced test. The sample is collected by TATA 1MG and processed at a NABL accredited partnered lab.
What does Scrub Typhus - IgM antibody measure?
The Scrub Typhus - IgM antibody test measures the levels of immunoglobulin M (IgM) antibodies in the blood that are specific to Orientia tsutsugamushi. These antibodies are produced by the body as an early immune response to the infection. Their presence may indicate an ongoing or recent infection with scrub typhus. Since IgM antibodies gradually decrease over time, this test is most useful in the early stages of the illness.





FAQs related to Scrub Typhus - IgM antibody
- About Scrub Typhus [Internet]. CDC; 15 May. 2024 [Accessed 08 Aug. 2025]. Available from:
- Singh OB, Panda PK. Scrub Typhus. [Updated 2022 Sep 26]. In: StatPearls [Internet]. Treasure Island (FL): StatPearls Publishing; 2024 Jan-. Available from:
- Chakraborty S, Sarma N. Scrub Typhus: An Emerging Threat. Indian J Dermatol. 2017 Sep-Oct;62(5):478-485. [Accessed 08 Aug. 2025]. Available from:
- Varghese GM, Rajagopal VM, Trowbridge P, Purushothaman D, Martin SJ. Kinetics of IgM and IgG antibodies after scrub typhus infection and the clinical implications. Int J Infect Dis. 2018 Jun;71:53-55. [Accessed 08 Aug. 2025]. Available from:
- Scrub typhus [Internet]. Britannica; 20 Dec. 2023. [Accessed 08 Aug. 2025]. Available from:
- Peter JV, Sudarsan TI, Prakash JA, Varghese GM. Severe scrub typhus infection: Clinical features, diagnostic challenges and management. World J Crit Care Med. 2015 Aug 4;4(3):244-50. [Accessed 08 Aug. 2025]. Available from:
- Kala D, Gupta S, Nagraik R, Verma V, Thakur A, Kaushal A. Diagnosis of scrub typhus: recent advancements and challenges. 3 Biotech. 2020 Sep;10(9):396. [Accessed 08 Aug. 2025]. Available from:
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