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1: Discuss the PCTEST and PCTESTCD Controlled Terminology. They are always measuring nicotine. 

This is an example of a study designed to evaluate plasma nicotine pharmacokinetic (PK) parameters following the use of nicotine  nicotine. Two different nicotine products were used in the study. Each product was evaluated in a 180-minute test session ..1–3 with 1-3 days in between each product use. Plasma samples were taken at 45, 30, and 15 minutes prior to the start of product use and 2, 4, 7, 10, 15, 20, 30, 40, 50, 60, and 120 minutes after the start of product use. (More  More time points were are often used, ; these timepoints presented were used only for illustration to save space.).  

(Cmax), time to reach Cmax (tmax), and the baseline-corrected area under the plasma concentration–time curves (i) from start of product use (t0) to the last quantifiable nicotine concentration time point (AUC0-last) and (ii) from t0 to 10 minutes after t0 (AUC0-10’). The pharmacokinetic parameters were derived from plasma nicotine concentrations-versus-time data by means of non-compartmental analysis. and corrected for baseline where the baseline (C0) was defined as the average concentration of the three time points prior to t0 (45, 30, and 15 minutes prior to t0).  The  analysis methods for the baseline corrected values were provided in the study protocol. 

The PCLLOQ for the assay used was 0/1 ng/ml , the PCULOQ was not reportedThe PCLLOQ for the analytes measured were reported; PCULOQs were not reported.  

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Rows 1-3:Show the day 1 pre-dose concentrations of nicotine in plasma at 45, 30 and 15 min before start of delivery of the nicotine.  PCDTC is populated to indicate when these specimens were collected.
Rows 4-8:Show the day 1  post drug 1 concentrations of nicotine in plasma after the start of delivery of the nicotine. 
Rows 89-17  16:  Show the day 1 4 pre- and post-dose concentrations of nicotine in plasma. 
Rows 17-18:Show the day 1 pre-dose plasma concentrations of cotinine and N'-Nitrosonornicotine in plasma.
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Dataset2
ABC-123123-0001NICOTINE PARENT2001
RowSTUDYIDDOMAINUSUBJIDPCSEQPCGRPIDPCREFIDPCTESTCDPCTESTPCCATPCSPECPCORRESPCORRESUPCSTRESCPCSTRESNPCSTRESUPCSTATPCLLOQPCULOQVISITNUMVISITVISITDYPCDTCPCDYPCTPTPCTPTNUMPCTPTREFPCRFTDTCPCELTM
1ABC-123A123PC123-0001A20081Day 1A554134-10NICO_PARA10NICOTNENicotineNICOTINE PARENTANALYTEPLASMA<0.1ng/mL<0.1
ng/mL0.101DAY 112001-02-01T07:15145MIN  45 MIN PREDOSE1Day 1 Dose20012021-02-01T08:00-PT45M
2A123PCA20082Day 1A554134-10NICO_PARA11NICOTINE

Nicotine

ANALYTEPLASMA<1.0ng/mL<1.0

0.101Day112001-02-01T07:30130 MIN PREDOSE2Day 1 Dose2021-02-01T08:00-PT30M
3ABC-123A123PC123-0001A20083Day 1A554134-10NICO_PARA12NICOTINENicotineNICOTINE PARENTANALYTEPLASMA<1.0ng/mL<0.1
ng/mL0.10201DAY 112001-02-01T07:45115 MIM MIN PREDOSE3Day 1 Dose20012021-02-01T08:00-PT15M
4ABC-123A123PC123-0001A20084Day  1 A554134-11NICO_PARDay 1A13NICOTINENicotineNICOTINE PARENTANALYTEPLASMA1.5ng/mL1.51.5ng/mL0.105001DAY 112001-02-01T08:0212M2 MIN4Day 1 Dose20012021-02-01T08:00PT2M
5ABC-123A123PC123-0001A20085Day 1A554134-11NICO_PARA14NICOTINENicotineNICOTINE PARENTANALYTEPLASMA3.0ng/mL3.03.0ng/mL0.105001DAY 112001-02-01T08:0414M4 MIN5Day 1 Dose20012021-02-01T08:00PT4M
6ABC-123A123PC123-0001A20086Day 1A554134-11NICO_PARA15NICOTINENicotineNICOTINE PARENTANALYTEPLASMA8.0ng/mL8.08.0ng/mL0.101DAY 112001-02-01T08:0818M8 MIN6Day 1 Dose20012021-02-01T08:00PT8M
7ABC-123A123PC123-0001A20087Day 1A554134-11NICO_PARA16NICOTINENicotineNICOTINE PARENTANALYTEPLASMA5.0.ng/mL5.05.0ng/mL0.101DAY 112001-02-01T09:00160M60 MIN7Day 1 Dose20012021-02-01T08:00PT60
8ABC-123A123PC123-0001A20088Day 1A554134-12NICO_PARA16NICOTINENicotineNICOTINE PARENTANALYTEPLASMA3.0ng/mL3.03.0ng/mL0.10201DAY 112001-02-01T010:001120M120 MIN8Day 1 Dose20012021-02-01T08:00PT120
9ABC-123A123PC123-0001A20089Day 4A554134-13NICO_PARA17NICOTINENicotineNICOTINE PARENTANALYTEPLASMA5.44ng/mL5.445.44ng/mL0.10202DAY 442001-02-04T107:15445MIN  45 MIN PREDOSE1Day 4 Dose20012021-02-04T08:00-PT45M
10ABC-123A123PC123-0001A200810Day 4A554134-13NICO_PARA18NICOTINENicotineNICOTINE PARENTANALYTEPLASMA1.09ng/mL1.091.09ng/mL0.10202DAY 442001-02-04T07:30430MIN 30 MIN PREDOSE2Day 4 Dose20012021-02-04T08:00-PT30M
1211ABC-123A123PC123-0001A200811Day 4A554134-14NICO_PARA19NICOTINENicotineNICOTINE PARENTANALYTEPLASMA<0.1ng/mL<0.1
ng/mL0.10202DAY 442001-02-04T07:15415 MIN REDOSE3Day 4 Dose20012021-02-04T08:00-PT15M
13ABC-123A123PC123-0001A200812Day 4A554134-15NICO_PARTA20NICOTINENicotineNICOTINE PARENTANALYTEPLASMA3.41ng/mL3.413.41ng/mL0.10202DAY 442001-02-04T08.0242M2 MIN4Day 4 Dose20012021-02-04T08:00PT2M
1413ABC-123A123PC123-0001A200813Day 4A554134-15NICO_PARA21NICOTINENicotineNICOTINE PARENTANALYTEPLASMA<0.1ng/mL<0.1
ng/mL0.10202DAY 442001-02-04T08:0444M4 MIN5Day 4 Dose20012021-02-04T08:00PT4M
1514ABC-123A123PC123-0001A200814Day 4A554134-16NICO_PARA22NICOTINENicotineNICOTINE PARENTANALYTEPLASMA8.74ng/mL8.748.74ng/mL0.10202DAY 442001-02-04T008.:0848M8 MIN6Day 4 Dose20012021-02-04T08:00PT8M
1615ABC-123A123PC123-0001A200815Day 4A554134-16NICO_PARA23NICOTINENicotineNICOTINE PARENTANALYTEPLASMA4.2ng/mL4.24.2ng/mL0.10202DAY 442001-02-04T09:00460M60 MIN7Day 4 Dose20012021-04-11T08:00PT160M
1716ABC-123A123PC123-0001A200816Day 4A554134-17NICO_PARA24NICOTINENicotineNICOTINE PARENTeANALYTEURINEPLASMA245ng/mL245245ng/mL0.105002DAY 442001-02-04T010:004120M120 MIN8Day 4 Dose20012021-04-11T08:00PT120M
17A123PCA200817Day 1A10COTININECotinineANALYTEPLASMA1ng/mL11ng/mL.0751DAY 112001-02-01T07:15145 MIN PREDOSE1Day 1 Dose2021-02-01T08:00-PT45M
18A123PCA200818Day 1A10NNNN'-NitrosonornicotineANALYTEPLASMA<0.1pg/mL<.3
pg/mL0.31DAY 112001-02-01T07:15145 MIN PREDOSE1Day 1 Dose2021-02-01T08:00-PT45M