Induration definition

Induration means the consolidation of a rock or rock material by the action of heat, pressure, or the introduction of some cementing material not commonly contained in the original mass. Induration also means the hardening of a soil horizon by chemical action to form hardpan (caliche).
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Induration means a firm area in the skin which develops as a reaction to injected tuberculosis proteins when a person has tuberculosis infection. The diameter of the firm area is measured to the nearest millimeter to gauge the degree of reaction. A reaction of ten (10) millimeters or more of induration is considered highly indicative of tuberculosis infection].
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Induration means a firm area in the skin which develops as a reaction to injected tu- berculin antigen if a person has tuberculosis infection and which is measured in accordance with Section 18(1) of this administrative regulation.
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Examples of Induration in a sentence

  • The TST is considered positive if: • Induration of ≥ 10 mm for all healthy refugees • Induration of ≥ 5 mm in refugees with HIV, known close contact with someone with infectious TB, chest X-ray consistent with prior TB, organ transplant recipient, or immunosuppressed The two FDA-approved IGRAs are the QuantiFERON®-TB Gold In-Tube test (QFT-GIT) and T-SPOT®.TB test (T-Spot)(33).

  • ESAT-6 versus tuberculin as skin test 195 Redness in response to rdESAT-6 (mm) 70 60 50 40 30 10 In vitro IFN-gamma response to ESAT-6 (IU/mL) Induration in response to rdESAT-6 (mm) 25 20 15 10 5 In vitro IFN-gamma response to ESAT-6 (IU/mL) Figure 4 Relation between in vitro responses to ESAT-6 and in vivo skin test responses to rdESAT-6.

  • DOUBTFUL REACTION -- Induration measuring 5 to 9 mm indicated a doubtful reaction.

  • NEGATIVE REACTION -- Induration of less than 5 mm is considered negative.

  • Induration sizes of > 15 mm are more likely to be the result of MTBI than prior BCG vaccination, especially if the subject was immunized in infancy and the vaccination occurred more than 10 prior to IGRA testing (86, 189).


More Definitions of Induration

Induration means a firm area in the skin which develops as a reaction to the intradermal in- jection of five (5) tuberculin units of purified protein derivative by the Mantoux technique when a per- son has tuberculosis infection.
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Related to Induration

  • Duration means the warranty period. This period may be a stated period of time, amount of usage, or the occurrence of a specified event, after formal acceptance of delivery, for the Government to assert a contractual right for the correction of defects.

  • Dose is a generic term that means absorbed dose, dose equivalent, effective dose equivalent, committed dose equivalent, committed effective dose equivalent, total organ dose equivalent, or total effective dose equivalent. For purposes of these regulations, "radiation dose" is an equivalent term.

  • Intensity means the number of Program Unique Supervised Hours divided by the Duration for a course or qualification, being a measure of the concentration of training and assessment delivered from the Eligible Individual’s perspective.

  • Tolerance means a state of adaptation in which exposure to a drug induces changes that result in a diminution of one or more of the drug’s effects over time.

  • Population means the population as ascertained at the last preceding census of which the relevant figures have been published;