How to Read Lyme Test Results: 13 Steps
Step 1: Understand the types of Lyme testing methods
There are two main testing methods used to determine if someone has Lyme disease—enzyme-linked immunosorbent assay (ELISA) and Western Blot. ELISA tests look for antibodies present in your blood that fight the bacteria causing Lyme disease. Western Blot tests detect specific proteins in your blood that indicate a Lyme infection.
Step 2: Visit a healthcare professional for testing
If you suspect you have Lyme disease, visit your doctor or healthcare provider. They will examine your symptoms, discuss your medical history, and order the appropriate testing.
Step 3: Await your test results
After you’ve provided a blood sample, the laboratory will analyze it for indications of Lyme disease. Results generally take a week or two to process.
Step 4: Receive a report with detailed information
Once the lab completes its analysis, you’ll receive a report with detailed information about your test results, including any positive or negative findings.
Step 5: Interpret ELISA test results
If you received an ELISA test, “positive” results indicate the presence of antibodies against the bacteria causing Lyme disease. “Negative” results mean no antibodies were detected.
Step 6: Analyze Western Blot test bands
If you had a Western Blot test, examine the bands on your report. The bands represent specific proteins in your blood associated with Lyme disease. Bands are numbered from 18 to 93 according to their molecular weight.
Step 7: Determine if your Western Blot results are positive or negative
Positive Western Blot results require a specific pattern of bands to be present. Criteria for a positive result include at least two out of three significant bands (23-25, 31, and 34) in IgM and at least five out of ten significant bands (18, 23-25, 28, 30, 39, 41, 45, 58, and 93) in IgG.
Step 8: Understand that false positives and negatives can occur
Both ELISA and Western Blot tests can yield false positive or negative results. Factors like the timing of your exposure or the presence of other illnesses can impact your test results.
Step 9: Discuss results with your healthcare provider
Regardless of your test results, discuss them with your healthcare provider. They will help you understand the implications of your results and determine whether further testing or treatment is necessary.
Step 10: Consider additional testing
If your results are inconclusive or contradictory, you may need additional testing. Your healthcare provider may order a different type of Lyme disease test or recommend further exams and investigations to confirm the diagnosis.
Step 11: Understand treatment options
If you test positive for Lyme disease, treatment typically involves an antibiotic regimen to address the infection. The prescribed antibiotics and duration of treatment will vary depending on the severity of your symptoms and stage of infection.
Step 12: Monitor progress through follow-up appointments
As you undergo treatment for Lyme disease, schedule regular follow-up appointments with your healthcare provider to assess your progress and make any necessary adjustments to your treatment plan.
Step 13: Be vigilant about preventing future Lyme exposure
Once you’ve been treated for Lyme disease, it’s crucial to be vigilant about preventing future exposure. Take precautions when spending time outdoors in wooded areas or grassy fields by wearing protective clothing, using bug repellent, and regularly checking for ticks on yourself and any pets.