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Biochemistry and Trace Metals Lab
(LAB06)
Data Frequencies

Table of Contents
 bullet LBXBPB: Lead (ug/dL)
bullet LBDBPBSI: Lead (umol/L)
bullet LBXBCD: Cadmium (ug/L)
bullet LBDBCDSI: Cadmium (umol/L)
bullet LBXEPP: Protoporphyrin (ug/dL RBC)
bullet LBDEPPSI: Protoporphyrin (umol/L RBC)
bullet LBXIRN: Iron (ug/dL)
bullet LBDIRNSI: Iron (umol/L)
bullet LBXTIB: TIBC (ug/dL)
bullet LBDTIBSI: TIBC (umol/L)
bullet LBXPCT: Transferrin saturation (%)
bullet LBXFER: Ferritin (ng/mL)
bullet LBDFERSI: Ferritin (ug/L)
bullet LBXFOL: Folate, serum (ng/mL)
bullet LBDFOLSI: Folate, serum (nmol/L)
bullet LBXB12: Vitamin B12, serum (pg/mL)
bullet LBDB12SI: Vitamin B12, serum (pmol/L)
bullet LBXHCY: Homocysteine (umol/L)
bullet LBXMMA: Methylmalonic acid (umol/L)
bullet LBXTHG: Mercury, total (ug/L)
bullet LBDTHGSI: Mercury, total (umol/L)
bullet LBXIHG: Mercury, Inorganic (ug/L)
bullet LBDIHGSI: Mercury, Inorganic (umol/L)
bullet LBXRBF: Folate, RBC (ng/mL RBC)
bullet LBDRBFSI: Folate, RBC (nmol/L RBC)
bullet LBXCOT: Cotinine (ng/mL)
bullet LBDCOTSI: Cotinine (nmol/L)
bullet LBXSEL: Selenium (ng/mL)
bullet LBDSELSI: Selenium (nmol/L)
bullet LBXALC: Alpha-carotene (ug/dL)
bullet LBDALCSI: Alpha-carotene (umol/L)
bullet LBXBEC: trans-Beta carotene (ug/dL)
bullet LBDBECSI: trans-Beta carotene (umol/L)
bullet LBXCBC: cis-Beta carotene (ug/dL)
bullet LBDCBCSI: cis-Beta carotene (umol/L)
bullet LBXCRY: Beta-cryptoxanthin (ug/dL)
bullet LBDCRYSI: Beta-cryptoxanthin (umol/L)
bullet LBXGTC: Gamma tocopherol (ug/dL)
bullet LBDGTCSI: Gamma tocopherol (umol/L)
bullet LBXLUZ: Lutein/zeaxanthin (ug/dL)
bullet LBDLUZSI: Lutein/zeaxanthin (umol/L)
bullet LBXLYC: Trans-lycopene (ug/dL)
bullet LBDLYCSI: Trans-lycopene (umol/L)
bullet LBXRPL: Retinyl palmitate (ug/dL)
bullet LBDRPLSI: Retinyl palmitate (umol/L)
bullet LBXRST: Retinyl stearate (ug/dL)
bullet LBDRSTSI: Retinyl stearate(umol/L)
bullet LBXVIA: Vitamin A (ug/dL)
bullet LBDVIASI: Vitamin A (umol/L)
bullet LBXVIE: Vitamin E (ug/dL)
bullet LBDVIESI: Vitamin E (umol/L)
bullet URXUHG: Mercury, urine (ng/mL)

 
 

Lead (ug/dL)
LBXBPB Frequency Percent Cumulative
Frequency		 Cumulative
Percent
.: Missing 862 9.76 862 9.76
0.2: Below detectable limit 45 0.51 907 10.27
0.2 <- 57.1: Detectable test results 7925 89.73 8832 100.00

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Lead (umol/L)
LBDBPBSI Frequency Percent Cumulative
Frequency		 Cumulative
Percent
.: Missing 862 9.76 862 9.76
0.01: Below detectable limit 45 0.51 907 10.27
0.01 <- 2.758: Detectable test results 7925 89.73 8832 100.00

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Cadmium (ug/L)
LBXBCD Frequency Percent Cumulative
Frequency		 Cumulative
Percent
.: Missing 862 9.76 862 9.76
0.2: Below detectable limit 2451 27.75 3313 37.51
0.2 <- 8.5: Detectable test results 5519 62.49 8832 100.00

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Cadmium (umol/L)
LBDBCDSI Frequency Percent Cumulative
Frequency		 Cumulative
Percent
.: Missing 862 9.76 862 9.76
1.78: Below detectable limit 2451 27.75 3313 37.51
1.78 <- 75.62: Detectable test results 5519 62.49 8832 100.00

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Analysis Variable : LBXEPP Protoporphyrin
(ug/dL RBC)
N N Miss Minimum Maximum
7985 847 18 884

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Analysis Variable : LBDEPPSI Protoporphyrin
(umol/L RBC)
N N Miss Minimum Maximum
7985 847 0.32 15.65

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Analysis Variable : LBXIRN Iron (ug/dL)
N N Miss Minimum Maximum
7877 955 5 292

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Analysis Variable : LBDIRNSI Iron (umol/L)
N N Miss Minimum Maximum
7877 955 0.9 52.27

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Analysis Variable : LBXTIB TIBC (ug/dL)
N N Miss Minimum Maximum
7847 985 101 761

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Analysis Variable : LBDTIBSI TIBC (umol/L)
N N Miss Minimum Maximum
7847 985 18.08 136.22

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Analysis Variable : LBXPCT Transferrin
saturation (%)
N N Miss Minimum Maximum
7845 987 1.1 100.9

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Analysis Variable : LBXFER Ferritin (ng/mL)
N N Miss Minimum Maximum
7849 983 3 1822

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Analysis Variable : LBDFERSI Ferritin
(ug/L)
N N Miss Minimum Maximum
7849 983 3 1822

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Analysis Variable : LBXFOL Folate, serum
(ng/mL)
N N Miss Minimum Maximum
7526 1306 1 220

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Analysis Variable : LBDFOLSI Folate,
serum (nmol/L)
N N Miss Minimum Maximum
7526 1306 2.3 498.3

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Analysis Variable : LBXB12 Vitamin B12,
serum (pg/mL)
N N Miss Minimum Maximum
7524 1308 47 201810

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Analysis Variable : LBDB12SI Vitamin
B12, serum (pmol/L)
N N Miss Minimum Maximum
7524 1308 34.69 148935.78

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Analysis Variable : LBXHCY Homocysteine
(umol/L)
N N Miss Minimum Maximum
7599 1233 1.61 156.3

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Methylmalonic acid (umol/L)
LBXMMA Frequency Percent Cumulative
Frequency		 Cumulative
Percent
.: Missing 1235 13.98 1235 13.98
0.04: Below detectable limit 73 0.83 1308 14.81
0.04 <- 35.96: Detectable test results 7524 85.19 8832 100.00

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Mercury, total (ug/L)
LBXTHG Frequency Percent Cumulative
Frequency		 Cumulative
Percent
.: Missing 6418 72.67 6418 72.67
0.1: Below detectable limit 230 2.60 6648 75.27
0.1 <- 138.9: Detectable test results 2184 24.73 8832 100.00

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Mercury, total (umol/L)
LBDTHGSI Frequency Percent Cumulative
Frequency		 Cumulative
Percent
.: Missing 6418 72.67 6418 72.67
0.5: Below detectable limit 230 2.60 6648 75.27
0.5 <- 194.11: Detectable test results 2184 24.73 8832 100.00

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Mercury, Inorganic (ug/L)
LBXIHG Frequency Percent Cumulative
Frequency		 Cumulative
Percent
.: Missing 6441 72.93 6441 72.93
0.3: Below detectable limit 2329 26.37 8770 99.30
0.3 <- 11.2: Detectable test results 62 0.70 8832 100.00

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Mercury, Inorganic (umol/L)
LBDIHGSI Frequency Percent Cumulative
Frequency		 Cumulative
Percent
.: Missing 6441 72.93 6441 72.93
1.5: Below detectable limit 2329 26.37 8770 99.30
1.5 <- 55.89: Detectable test results 62 0.70 8832 100.00

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Analysis Variable : LBXRBF Folate, RBC
(ng/mL RBC)
N N Miss Minimum Maximum
7614 1218 28 2352

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Analysis Variable : LBDRBFSI Folate,
RBC (nmol/L RBC)
N N Miss Minimum Maximum
7614 1218 63.4 5327.3

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Cotinine (ng/mL)
LBXCOT Frequency Percent Cumulative
Frequency		 Cumulative
Percent
.: Missing 1548 17.53 1548 17.53
0.035: Below detectable limit 2743 31.06 4291 48.58
0.035 <- 989: Detectable test results 4541 51.42 8832 100.00

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Cotinine (nmol/L)
LBDCOTSI Frequency Percent Cumulative
Frequency		 Cumulative
Percent
.: Missing 1548 17.53 1548 17.53
0.199: Below detectable limit 2743 31.06 4291 48.58
0.199 <- 5617.52: Detectable test results 4541 51.42 8832 100.00

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Analysis Variable : LBXSEL Selenium (ng/mL)
N N Miss Minimum Maximum
1186 7646 33 180

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Analysis Variable : LBDSELSI Selenium
(nmol/L)
N N Miss Minimum Maximum
1186 7646 0.42 2.29

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Alpha-carotene (ug/dL)
LBXALC Frequency Percent Cumulative
Frequency		 Cumulative
Percent
.: Missing 1430 16.19 1430 16.19
0.49: Below detectable limit 924 10.46 2354 26.65
0.49 <- 122.7: Detectable test results 6478 73.35 8832 100.00

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Alpha-carotene (umol/L)
LBDALCSI Frequency Percent Cumulative
Frequency		 Cumulative
Percent
.: Missing 1430 16.19 1430 16.19
0.009: Below detectable limit 924 10.46 2354 26.65
0.009 <- 2.286: Detectable test results 6478 73.35 8832 100.00

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trans-Beta carotene (ug/dL)
LBXBEC Frequency Percent Cumulative
Frequency		 Cumulative
Percent
.: Missing 1477 16.72 1477 16.72
0.57: Below detectable limit 22 0.25 1499 16.97
0.57 <- 237.8: Detectable test results 7333 83.03 8832 100.00

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trans-Beta carotene (umol/L)
LBDBECSI Frequency Percent Cumulative
Frequency		 Cumulative
Percent
.: Missing 1477 16.72 1477 16.72
0.011: Below detectable limit 22 0.25 1499 16.97
0.011 <- 4.43: Detectable test results 7333 83.03 8832 100.00

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cis-Beta carotene (ug/dL)
LBXCBC Frequency Percent Cumulative
Frequency		 Cumulative
Percent
.: Missing 2823 31.96 2823 31.96
0.49: Below detectable limit 1794 20.31 4617 52.28
0.49 <- 13.1: Detectable test results 4215 47.72 8832 100.00

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cis-Beta carotene (umol/L)
LBDCBCSI Frequency Percent Cumulative
Frequency		 Cumulative
Percent
.: Missing 2823 31.96 2823 31.96
0.009: Below detectable limit 1794 20.31 4617 52.28
0.009 <- 0.244: Detectable test results 4215 47.72 8832 100.00

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Beta-cryptoxanthin (ug/dL)
LBXCRY Frequency Percent Cumulative
Frequency		 Cumulative
Percent
.: Missing 1529 17.31 1529 17.31
0.64: Below detectable limit 70 0.79 1599 18.10
0.64 <- 93.3: Detectable test results 7233 81.90 8832 100.00

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Beta-cryptoxanthin (umol/L)
LBDCRYSI Frequency Percent Cumulative
Frequency		 Cumulative
Percent
.: Missing 1529 17.31 1529 17.31
0.012: Below detectable limit 70 0.79 1599 18.10
0.012 <- 1.688: Detectable test results 7233 81.90 8832 100.00

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Gamma tocopherol (ug/dL)
LBXGTC Frequency Percent Cumulative
Frequency		 Cumulative
Percent
.: Missing 2411 27.30 2411 27.30
7.57: Below detectable limit 1 0.01 2412 27.31
7.57 <- 2277.4: Detectable test results 6420 72.69 8832 100.00

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Gamma tocopherol (umol/L)
LBDGTCSI Frequency Percent Cumulative
Frequency		 Cumulative
Percent
.: Missing 2411 27.30 2411 27.30
0.18: Below detectable limit 1 0.01 2412 27.31
0.18 <- 54.66: Detectable test results 6420 72.69 8832 100.00

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Lutein/zeaxanthin (ug/dL)
LBXLUZ Frequency Percent Cumulative
Frequency		 Cumulative
Percent
.: Missing 1862 21.08 1862 21.08
1.7: Below detectable limit 8 0.09 1870 21.17
1.7 <- 110.6: Detectable test results 6962 78.83 8832 100.00

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Lutein/zeaxanthin (umol/L)
LBDLUZSI Frequency Percent Cumulative
Frequency		 Cumulative
Percent
.: Missing 1862 21.08 1862 21.08
0.03: Below detectable limit 8 0.09 1870 21.17
0.03 <- 1.94: Detectable test results 6962 78.83 8832 100.00

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Trans-lycopene (ug/dL)
LBXLYC Frequency Percent Cumulative
Frequency		 Cumulative
Percent
.: Missing 1433 16.23 1433 16.23
0.57: Below detectable limit 26 0.29 1459 16.52
0.57 <- 85: Detectable test results 7373 83.48 8832 100.00

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Trans-lycopene (umol/L)
LBDLYCSI Frequency Percent Cumulative
Frequency		 Cumulative
Percent
.: Missing 1433 16.23 1433 16.23
0.011: Below detectable limit 26 0.29 1459 16.52
0.011 <- 1.584: Detectable test results 7373 83.48 8832 100.00

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Retinyl palmitate (ug/dL)
LBXRPL Frequency Percent Cumulative
Frequency		 Cumulative
Percent
.: Missing 2974 33.67 2974 33.67
0.14: Below detectable limit 962 10.89 3936 44.57
0.14 <- 40: Detectable test results 4896 55.43 8832 100.00

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Retinyl palmitate (umol/L)
LBDRPLSI Frequency Percent Cumulative
Frequency		 Cumulative
Percent
.: Missing 2974 33.67 2974 33.67
0.005: Below detectable limit 962 10.89 3936 44.57
0.005 <- 1.396: Detectable test results 4896 55.43 8832 100.00

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Retinyl stearate (ug/dL)
LBXRST Frequency Percent Cumulative
Frequency		 Cumulative
Percent
.: Missing 4481 50.74 4481 50.74
0.35: Below detectable limit 3750 42.46 8231 93.20
0.35 <- 15: Detectable test results 601 6.80 8832 100.00

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Retinyl stearate(umol/L)
LBDRSTSI Frequency Percent Cumulative
Frequency		 Cumulative
Percent
.: Missing 4481 50.74 4481 50.74
0.012: Below detectable limit 3750 42.46 8231 93.20
0.012 <- 0.524: Detectable test results 601 6.80 8832 100.00

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Analysis Variable : LBXVIA Vitamin A
(ug/dL)
N N Miss Minimum Maximum
7445 1387 6.7 223.2

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Analysis Variable : LBDVIASI Vitamin
A (umol/L)
N N Miss Minimum Maximum
7445 1387 0.23 7.79

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Analysis Variable : LBXVIE Vitamin E
(ug/dL)
N N Miss Minimum Maximum
7401 1431 35.5 7230.3

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Analysis Variable : LBDVIESI Vitamin
E (umol/L)
N N Miss Minimum Maximum
7401 1431 0.82 167.89

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Mercury, urine (ng/mL)
URXUHG Frequency Percent Cumulative
Frequency		 Cumulative
Percent
.: Missing 7084 80.21 7084 80.21
0.1: Below detectable limit 175 1.98 7259 82.19
0.1 <- 68.51: Detectable test results 1573 17.81 8832 100.00

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This page last reviewed January 11, 2007

H H S Health and Human Services logo and link
U.S. DEPARTMENT OF HEALTH AND HUMAN SERVICES
Centers for Disease Control and Prevention
National Center for Health Statistics
Hyattsville, MD
20782

 1-800-232-4636