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. 2019 Oct 1;6:328. doi: 10.3389/fvets.2019.00328

Table 1.

Assays of bovine tuberculin PPDs in naturally TB-infected cattle: 2010–2017, PPDs used in the Irish programme; 2006, 2010, and 2018, INBS and BIS; 2004, 2008, trials involving PPDs in tuberculin testing.

Batch no. Year manufacture Protein content mg/ml Guinea-pig assay IU/ml Bovine assay IU/ml
Year 95% confidence limits Standard
Potency* Potency Lower Upper
INBS 1994 1.0 33,700 2018 30,568 19,749 46,981 BIS
BIS 1979 1.0 32,500 2013 25,821 13,792 46,561 INBS
INBS 1994 1.0 33,700 2006 46,079 31,722 68,238 BIS
170312 2017 1.0 30,350 2017 39,098 23,359 66,470 INBS
171502 2017 1.2 23,380 2017 76,927 46,043 140,170 INBS
162408 2016 0.95 24,850 2017 35,961 23,595 55,056 INBS
161102 2016 1.42 24,210 2016 50,082 30,243 86,391 INBS
153501 2015 1.25 40,950 2016 70,250 42,339 125,726 INBS
143806 2014 1.04 31,140 2015 59,058 36,584 100,423 INBS
143813 2014 1.02 30,540 2015 58,424 37,698 94,453 INBS
141310 2014 1.02 30,940 2015 52,697 34,020 84,478 INBS
141304 2014 1.01 30,640 2014 59,062 30,037 129,421 INBS
134511 2013 1.04 27,950 2014 36,822 18,300 75,367 INBS
102401 2010 1.11 26,580 2014 59,062 30,037 129,421 INBS
132203 2013 1.24 30,880 2013 52,601 35,380 80,416 INBS
132206 2013 1.08 26,900 2013 37,054 24,837 55,611 INBS
120103 2012 1.32 24,280 2012 64,795 37,264 122,280 INBS
120101 2012 1.15 21,130 2012 47,772 27,908 85,194 INBS
110404 2011 1.33 21,880 2011 50,811 30,532 88,291 INBS
110404 2011 1.33 21,880 2012 81,239 33,751 266,063 INBS
112006 2011 1.24 24,060 2012 59,999 35,112 109,705 INBS
104012 2010 1.16 23,500 2011 38,738 23,128 65,840 INBS
100308 2010 1.38 26,200 2011 57,979 34,854 102,114 INBS
102414 2010 1.11 26,220 2011 41,509 21,299 83,991 INBS
LPa 2008 0.16 3,400 2008 11,920 4,950 23,540 INBS
NPa 2008 1.23 26,380 2008 61,840 31,570 136,000 INBS
HPa 2008 3.11 66,700 2008 125,540 62,570 323,820 INBS
JNb 2004 na 10,250 2005 11,552 6,202 20,779 INBS
FMb 2004 na 16,500 2005 25,900 14,866 44,784 INBS
KSb 2004 na 9,250 2005 28,747 16,535 49,754 INBS
HTb 2004 na 31,500 2005 33,868 19,532 58,734 INBS
GRb 2004 na 27,750 2005 45,003 25,217 81,062 INBS
LPb 2004 na 24,500 2005 45,003 25,217 81,062 INBS
*

The Guinea Pig potency is determined against the Bovine International Standard (IS) (32,500 IU/ml).

a

Good et al. (19).

b

Good et al. (27).

na, not available.