2.低滴度反应性(low-titer reactive):如果RPR结果为低滴度反应性,例如1:2或1:4,通常可能表明患者处于早期感染阶段或感染程度较轻。在这种情况下,建议进行更具体的梅毒抗体检测,如TPHA(Treponema Pallidum Hemagglutination Assay)。 3.高滴度反应性(high-titer reactive):如果RPR结果为高滴度反应性,例如1:8或更高...
a quantitative titer test will then be performed to determine the actual concentration of antibodies in the blood sample. If the titer returns a ratio of 1:4 or higher, the CDC then recommends doing aT. Padillum testbecause both types of tests are needed to confirm an active syphilis infecti...
Flocculation is checked macroscopically under high intensity light source. Quantitative Method Dilute to an endpoint titer all serum specimens with rough nonreactive results in the qualitative test. Test each specimen undiluted (1:1), and in 1:2, 1:4, 1:8, and 1:16 dilutions. Place 50 µ...
Twenty (6.6%) had a positive RPR with a mean 卤 SE titer of 3.8 1.5 and two had lumbar punctures with negative CSF VDRL tests. All 20 patients were treated for late latent syphilis. Five cases of neurosyphilis were diagnosed by positive CSF VDRL from 1/00 to 4/06. When the neuro...
This behavior was sufficient to explain the shorter half-life at high initial RPR titer and was modeled with classical Michaelis–Menten kinetics, as in a previous study [10]. This non-linear behavior was well approximated by a simpler second-order decay model (Figure 2C). Indeed, second-...
This behavior was sufficient to explain the shorter half-life at high initial RPR titer and was modeled with classical Michaelis–Menten kinetics, as in a previous study [10]. This non-linear behavior was well approximated by a simpler second-order decay model (Figure 2C). Indeed, second-...
This behavior was sufficient to explain the shorter half-life at high initial RPR titer and was modeled with classical Michaelis–Menten kinetics, as in a previous study [10]. This non-linear behavior was well approximated by a simpler second-order decay model (Figure 2C). Indeed, second-...