TABLE 5

LAMP Results for BLLs <10 µg/dL Reported by 66 Continuously Participating US Laboratories (2011–2015)

Sample IDTarget Valuea (±3 SDs)No. Laboratories Reported ResultsAccurate Within a z Score of ±2, or Reported as Less Than LODNo. Laboratories Reported Less Than LOD% of Laboratories Reported Results Within a z Score of ±2 or Reported as Less Than LODConsensus Mean (SD)RSD, %
15030.18 (0.03–0.33)4646251000.96 (0.81)84
14020.20 (0.00–0.44)4848251000.94 (0.77)82
12050.31 (0.22–0.40)534820910.86 (0.78)91
13040.34 (0.25–0.43)525020960.92 (0.78)85
12100.38 (0.35–0.41)5151211000.94 (0.64)68
11010.42 (0.06–0.78)545318980.85 (0.86)101
14090.45 (0.36–0.54)4545191001.08 (0.76)70
12121.20 (1.14–1.26)515025981.33 (0.5)38
12011.28 (1.16–1.40)545025931.33 (0.7)53
12071.48 (1.42–1.54)555322961.45 (0.53)37
13024.60 (3.94–5.26)55533964.15 (0.77)19
14074.69 (4.33–5.05)454521004.52 (0.45)10
15055.02 (4.15–5.89)45441984.73 (0.87)18
14045.30 (4.73–5.87)474721004.86 (0.77)16
12035.43 (5.03–5.82)55511935.15 (0.997)19
13126.11 (5.60–6.62)46421915.4 (1.14)21
12046.40 (5.74–7.06)535301006.15 (0.68)11
15066.67 (5.59–7.75)45430966.23 (0.73)12
13058.75 (8.48–9.02)52510988.44 (1.18)14
13108.97 (8.67–9.27)46430938.27 (1.23)15
15029.16 (7.66–10.66)474701008.25 (0.68)8
150810.13 (8.84–11.42)454511009.7 (0.96)10
141110.32 (8.73–11.91)47440949.66 (1.37)14
140510.35 (7.32–13.38)47461989.42 (1.36)14
120910.37 (9.44–11.30)555409810.26 (1.02)10
140310.90 (10.0–11.8)484609610.42 (1.34)13
  • a Reference materials were developed to target values between 5 and 10 µg/dL, based on the 2012 reference value of 5 µg/dL. If the reference value is lowered, future reference materials will target lower blood lead values.