| The patient's angiotensin-converting enzyme level was slightly elevated, and the rapid plasma reagin test was nonreactive. |
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| The mother was O Rh-positive, antibody screen negative, rapid plasma reagin nonreactive, hepatitis B surface antigen negative. |
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| Blood work, including rapid plasma reagin for syphilis and heavy metal screening, had been reported as normal. |
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| This reaction is the basis of traditional nontreponemal tests such as the VDRL test and rapid plasma reagin test. |
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| Even without a confirmatory rapid plasma reagin test or darkfield examination of the gummatous discharge, the diagnosis of secondary syphilis was obvious. |
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| The results of a VDRL test and rapid plasma reagin were negative. |
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| In RPR and VDRL the detection of syphilis reagin is based on the reaction of reagin with a lipid antigen usually extracted from beef heart to produce a visible clumping, or flocculation, within the serum. |
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| Tests for human immunodeficiency virus and borreliosis were negative, and her rapid plasma reagin test was nonreactive. |
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| However, both RPR and VDRL are useful only after the body has a sufficient amount of time to generate a detectable amount of reagin, which usually occurs several weeks following the appearance of a chancre in primary disease. |
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