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Combined Interpretations of the 2003, 2009, and 2016 Standards that apply to Volume 1 of the 2016 TNI Standard


Question:  Please clarify the use of "analysis date" in V1M1, section 4.2.1 a) for successive PT samples.  The standard states that the analysis date is to be at least 5 months apart and no longer than 7 months apart.  TNI defines "analysis date" as the "calendar date of analysis" in the "Terms and Definitions" section.  So, if a PT sample is analyzed on March 15, 2011, is the period anytime between August 2011 and October 2011 (5 - 7 months) acceptable, or, must one use the period August 15, 2011 to October 15, 2011 for the next PT sample?

TNI Response:  Analysis date was removed from the 2016 standard. The SIR is obsolete.

Question:  There is a discrepancy between these two sections.  V1M1 6.1 b) says 15 days between analysis dates for successive PTs for corrective action.  V2M2 8.2 c) still uses the closing date of the previous study.

TNI Response:  The 2016 standard does not discuss PTs for corrective action, but instead refers to corrective action in a general sense and references Module 2. The SIR is obsolete.