First test positive - Second test negative

jhb2019

New member
First test by dermatologists office via LabCorp Raritan 11/11/19 was positive:
IgG lines 18, 23, 30, 41, 45 positive
IgM line 41 positive

Started same day Doxycycline 100 mg 2/day.

Second test 3 days later by PCP via Imugen 11/14/19 results: negative

Q: Is Imugen less accurate than LabCorp?
Q: What explains positive then negative results?
 

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