Isotopes of lutetium

Naturally occurring lutetium (71Lu) is composed of one stable isotope 175Lu (97.41% natural abundance) and one long-lived radioisotope, 176Lu with a half-life of 37 billion years (2.59% natural abundance). Forty radioisotopes have been characterized, with the most stable, besides 176Lu, being 174Lu with a half-life of 3.31 years, and 173Lu with a half-life of 1.37 years. All of the remaining radioactive isotopes have half-lives that are less than 9 days, and the majority of these have half-lives that are less than half an hour. This element also has 18 meta states, with the most stable being 177mLu (t1/2 160.4 days), 174mLu (t1/2 142 days) and 178mLu (t1/2 23.1 minutes).

The known isotopes of lutetium range in mass number from 149 to 190. The primary decay mode before the most abundant stable isotope, 175Lu, is electron capture (with some alpha and positron emission), and the primary mode after is beta emission. The primary decay products before 175Lu are isotopes of ytterbium and the primary products after are isotopes of hafnium. All isotopes of lutetium are either radioactive or, in the case of 175Lu, observationally stable, meaning that 175Lu is predicted to be radioactive but no actual decay has been observed.

List of isotopes
[30(+95−15) μs] [6(+3−2) min]
 * 149Lu
 * style="text-align:right" | 71
 * style="text-align:right" | 78
 * p
 * 148Yb
 * 11/2−
 * rowspan=2|150Lu
 * rowspan=2 style="text-align:right" | 71
 * rowspan=2 style="text-align:right" | 79
 * rowspan=2|149.97323(54)#
 * rowspan=2 data-sort-value='3(ms) 043.5' | 43(5) ms
 * p (80%)
 * 149Yb
 * rowspan=2|(2+)
 * rowspan=2|
 * β+ (20%)
 * 150Yb
 * style="text-indent:1em" | 150mLu
 * colspan="3" style="text-indent:2em" | 34(15) keV
 * data-sort-value='2(μs) 080' | 80(60) μs
 * β+ (20%)
 * 150Yb
 * style="text-indent:1em" | 150mLu
 * colspan="3" style="text-indent:2em" | 34(15) keV
 * data-sort-value='2(μs) 080' | 80(60) μs
 * colspan="3" style="text-indent:2em" | 34(15) keV
 * data-sort-value='2(μs) 080' | 80(60) μs
 * [proton emission|p
 * 149Yb
 * (1, 2)
 * rowspan=2|151Lu
 * rowspan=2 style="text-align:right" | 71
 * rowspan=2 style="text-align:right" | 80
 * rowspan=2|150.96757682
 * rowspan=2 data-sort-value='3(ms) 080.6' | 80.6(5) ms
 * p (63.4%)
 * 150Yb
 * rowspan=2|(11/2−)
 * rowspan=2|
 * β+ (36.6%)
 * 151Yb
 * style="text-indent:1em" | 151mLu
 * colspan="3" style="text-indent:2em" | 77(5) keV
 * data-sort-value='2(μs) 016' | 16(1) μs
 * p
 * 150Yb
 * (3/2+)
 * rowspan=2|152Lu
 * rowspan=2 style="text-align:right" | 71
 * rowspan=2 style="text-align:right" | 81
 * rowspan=2|151.96412(21)#
 * rowspan=2 data-sort-value='3(ms) 650' | 650(70) ms
 * β+ (85%)
 * 152Yb
 * rowspan=2|(5−, 6−)
 * rowspan=2|
 * β+, p (15%)
 * 151Tm
 * rowspan=2|153Lu
 * rowspan=2 style="text-align:right" | 71
 * rowspan=2 style="text-align:right" | 82
 * rowspan=2|152.95877(22)
 * rowspan=2 data-sort-value='4(s) 000.9' | 0.9(2) s
 * α (70%)
 * 149Tm
 * rowspan=2|11/2−
 * rowspan=2|
 * β+ (30%)
 * 153Yb
 * style="text-indent:1em" | 153m1Lu
 * colspan="3" style="text-indent:2em" | 80(5) keV
 * data-sort-value='4(s) 001' | 1# s
 * IT
 * 153Lu
 * 1/2+
 * style="text-indent:1em" | 153m2Lu
 * colspan="3" style="text-indent:2em" | 2502.5(4) keV
 * data-sort-value='2(μs) 000.1' | >0.1 μs
 * IT
 * 153Lu
 * 23/2−
 * style="text-indent:1em" | 153m3Lu
 * colspan="3" style="text-indent:2em" | 2632.9(5) keV
 * data-sort-value='2(μs) 015' | 15(3) μs
 * IT
 * 153m2Lu
 * 27/2−
 * rowspan=2|154Lu
 * rowspan=2 style="text-align:right" | 71
 * rowspan=2 style="text-align:right" | 83
 * rowspan=2|153.95752(22)#
 * rowspan=2 data-sort-value='4(s) 001' | 1# s
 * β+?
 * 154Yb
 * rowspan=2|(2−)
 * rowspan=2|
 * α?
 * 150Tm
 * rowspan=4 style="text-indent:1em" | 154m1Lu
 * rowspan=4 colspan="3" style="text-indent:2em" | 58(13) keV
 * rowspan=4 data-sort-value='4(s) 001.12' | 1.12(8) s
 * β+
 * 154Yb
 * rowspan=4|(9+)
 * rowspan=4|
 * β+p?
 * 153Tm
 * β+α?
 * 150Er
 * α?
 * 150Tm
 * style="text-indent:1em" | 154m2Lu
 * colspan="3" style="text-indent:2em" | >2562 keV
 * data-sort-value='2(μs) 035' | 35(3) μs
 * IT
 * 154Lu
 * (17+)
 * rowspan=2|155Lu
 * rowspan=2 style="text-align:right" | 71
 * rowspan=2 style="text-align:right" | 84
 * rowspan=2|154.954316(22)
 * rowspan=2 data-sort-value='3(ms) 068.6' | 68.6(16) ms
 * α (76%)
 * 151Tm
 * rowspan=2|(11/2−)
 * rowspan=2|
 * β+ (24%)
 * 155Yb
 * rowspan=2 style="text-indent:1em" | 155m1Lu
 * rowspan=2 colspan="3" style="text-indent:2em" | 20(6) keV
 * rowspan=2 data-sort-value='3(ms) 138' | 138(8) ms
 * α (88%)
 * 151Tm
 * rowspan=2|(1/2+)
 * rowspan=2|
 * β+ (12%)
 * 155Yb
 * style="text-indent:1em" | 155m2Lu
 * colspan="3" style="text-indent:2em" | 1781.0(20) keV
 * data-sort-value='3(ms) 002.7' | 2.70(3) ms
 * (25/2−)
 * rowspan=2|156Lu
 * rowspan=2 style="text-align:right" | 71
 * rowspan=2 style="text-align:right" | 85
 * rowspan=2|155.95303(8)
 * rowspan=2 data-sort-value='3(ms) 494' | 494(12) ms
 * α (95%)
 * 152Tm
 * rowspan=2|(2)−
 * rowspan=2|
 * β+ (5%)
 * 156Yb
 * rowspan=2 style="text-indent:1em" | 156mLu
 * rowspan=2 colspan="3" style="text-indent:2em" | 220(80)# keV
 * rowspan=2 data-sort-value='3(ms) 198' | 198(2) ms
 * α (94%)
 * 152Tm
 * rowspan=2|(9)+
 * rowspan=2|
 * β+ (6%)
 * 156Yb
 * rowspan=2|157Lu
 * rowspan=2 style="text-align:right" | 71
 * rowspan=2 style="text-align:right" | 86
 * rowspan=2|156.950098(20)
 * rowspan=2 data-sort-value='4(s) 006.8'| 6.8(18) s
 * β+
 * 157Yb
 * rowspan=2|(1/2+, 3/2+)
 * rowspan=2|
 * α
 * 153Tm
 * rowspan=2 style="text-indent:1em" | 157mLu
 * rowspan=2 colspan="3" style="text-indent:2em" | 21.0(20) keV
 * rowspan=2 data-sort-value='4(s) 004.79' | 4.79(12) s
 * β+ (94%)
 * 157Yb
 * rowspan=2|(11/2−)
 * rowspan=2|
 * α (6%)
 * 153Tm
 * rowspan=2|158Lu
 * rowspan=2 style="text-align:right" | 71
 * rowspan=2 style="text-align:right" | 87
 * rowspan=2|157.949313(16)
 * rowspan=2 data-sort-value='4(s) 010.6' | 10.6(3) s
 * β+ (99.09%)
 * 158Yb
 * rowspan=2|2−
 * rowspan=2|
 * α (.91%)
 * 154Tm
 * rowspan=2|159Lu
 * rowspan=2 style="text-align:right" | 71
 * rowspan=2 style="text-align:right" | 88
 * rowspan=2|158.94663(4)
 * rowspan=2 data-sort-value='4(s) 012' | 12.1(10) s
 * β+ (99.96%)
 * 159Yb
 * rowspan=2|1/2+#
 * rowspan=2|
 * α (.04%)
 * 155Tm
 * style="text-indent:1em" | 159mLu
 * colspan="3" style="text-indent:2em" | 100(80)# keV
 * data-sort-value='4(s) 010' | 10# s
 * 11/2−#
 * rowspan=2|160Lu
 * rowspan=2 style="text-align:right" | 71
 * rowspan=2 style="text-align:right" | 89
 * rowspan=2|159.94603(6)
 * rowspan=2 data-sort-value='4(s) 036' | 36.1(3) s
 * β+
 * 160Yb
 * rowspan=2|2−#
 * rowspan=2|
 * α (10−4%)
 * 156Tm
 * style="text-indent:1em" | 160mLu
 * colspan="3" style="text-indent:2em" | 0(100)# keV
 * data-sort-value='4(s) 040' | 40(1) s
 * 161Lu
 * style="text-align:right" | 71
 * style="text-align:right" | 90
 * 160.94357(3)
 * data-sort-value='4(s) 077' | 77(2) s
 * β+
 * 161Yb
 * 1/2+
 * style="text-indent:1em" | 161mLu
 * colspan="3" style="text-indent:2em" | 166(18) keV
 * data-sort-value='3(ms) 007.3' | 7.3(4) ms
 * IT
 * 161Lu
 * (9/2−)
 * 162Lu
 * style="text-align:right" | 71
 * style="text-align:right" | 91
 * 161.94328(8)
 * data-sort-value='5(min) 01.37' | 1.37(2) min
 * β+
 * 162Yb
 * (1−)
 * rowspan=2 style="text-indent:1em" | 162m1Lu
 * rowspan=2 colspan="3" style="text-indent:2em" | 120(200)# keV
 * rowspan=2 data-sort-value='5(min) 01.5' | 1.5 min
 * β+
 * 162Yb
 * rowspan=2|4−#
 * rowspan=2|
 * IT (rare)
 * 162Lu
 * style="text-indent:1em" | 162m2Lu
 * colspan="3" style="text-indent:2em" | 300(200)# keV
 * data-sort-value='5(min) 01.9' | 1.9 min
 * 163Lu
 * style="text-align:right" | 71
 * style="text-align:right" | 92
 * 162.94118(3)
 * data-sort-value='5(min) 03.97' | 3.97(13) min
 * β+
 * 163Yb
 * 1/2(+)
 * 164Lu
 * style="text-align:right" | 71
 * style="text-align:right" | 93
 * 163.94134(3)
 * data-sort-value='5(min) 03.14' | 3.14(3) min
 * β+
 * 164Yb
 * 1(−)
 * 165Lu
 * style="text-align:right" | 71
 * style="text-align:right" | 94
 * 164.939407(28)
 * data-sort-value='5(min) 10.74' | 10.74(10) min
 * β+
 * 165Yb
 * 1/2+
 * 166Lu
 * style="text-align:right" | 71
 * style="text-align:right" | 95
 * 165.93986(3)
 * data-sort-value='5(min) 02.65' | 2.65(10) min
 * β+
 * 166Yb
 * (6−)
 * rowspan=2 style="text-indent:1em" | 166m1Lu
 * rowspan=2 colspan="3" style="text-indent:2em" | 34.37(5) keV
 * rowspan=2 data-sort-value='5(min) 01.41' | 1.41(10) min
 * β+ (58%)
 * 166Yb
 * rowspan=2|3(−)
 * rowspan=2|
 * IT (42%)
 * 166Lu
 * style="text-indent:1em" | 166m2Lu
 * colspan="3" style="text-indent:2em" | 42.9(5) keV
 * data-sort-value='5(min) 02.12' | 2.12(10) min
 * 0(−)
 * 167Lu
 * style="text-align:right" | 71
 * style="text-align:right" | 96
 * 166.93827(3)
 * data-sort-value='5(min) 51.5' | 51.5(10) min
 * β+
 * 167Yb
 * 7/2+
 * style="text-indent:1em" | 167mLu
 * colspan="3" style="text-indent:2em" | 0(30)# keV
 * data-sort-value='5(min) 01' | >1 min
 * 1/2(−#)
 * 168Lu
 * style="text-align:right" | 71
 * style="text-align:right" | 97
 * 167.93874(5)
 * data-sort-value='5(min) 05.5' | 5.5(1) min
 * β+
 * 168Yb
 * (6−)
 * rowspan=2 style="text-indent:1em" | 168mLu
 * rowspan=2 colspan="3" style="text-indent:2em" | 180(110) keV
 * rowspan=2 data-sort-value='5(min) 06.7' | 6.7(4) min
 * β+ (95%)
 * 168Yb
 * rowspan=2|3+
 * rowspan=2|
 * IT (5%)
 * 168Lu
 * 169Lu
 * style="text-align:right" | 71
 * style="text-align:right" | 98
 * 168.937651(6)
 * data-sort-value='6(h) 34.06' | 34.06(5) h
 * β+
 * 169Yb
 * 7/2+
 * style="text-indent:1em" | 169mLu
 * colspan="3" style="text-indent:2em" | 29.0(5) keV
 * data-sort-value='4(s) 160' | 160(10) s
 * IT
 * 169Lu
 * 1/2−
 * 170Lu
 * style="text-align:right" | 71
 * style="text-align:right" | 99
 * 169.938475(18)
 * data-sort-value='7(d) 002.012' | 2.012(20) d
 * β+
 * 170Yb
 * 0+
 * style="text-indent:1em" | 170mLu
 * colspan="3" style="text-indent:2em" | 92.91(9) keV
 * data-sort-value='3(ms) 670' | 670(100) ms
 * IT
 * 170Lu
 * (4)−
 * 171Lu
 * style="text-align:right" | 71
 * style="text-align:right" | 100
 * 170.9379131(30)
 * data-sort-value='7(d) 008.24' | 8.24(3) d
 * β+
 * 171Yb
 * 7/2+
 * style="text-indent:1em" | 171mLu
 * colspan="3" style="text-indent:2em" | 71.13(8) keV
 * data-sort-value='4(s) 079' | 79(2) s
 * IT
 * 171Lu
 * 1/2−
 * 172Lu
 * style="text-align:right" | 71
 * style="text-align:right" | 101
 * 171.939086(3)
 * data-sort-value='7(d) 006.7' | 6.70(3) d
 * β+
 * 172Yb
 * 4−
 * style="text-indent:1em" | 172m1Lu
 * colspan="3" style="text-indent:2em" | 41.86(4) keV
 * data-sort-value='5(min) 03.7' | 3.7(5) min
 * IT
 * 172Lu
 * 1−
 * style="text-indent:1em" | 172m2Lu
 * colspan="3" style="text-indent:2em" | 65.79(4) keV
 * data-sort-value='2(μs) 000.332' | 0.332(20) μs
 * (1)+
 * style="text-indent:1em" | 172m3Lu
 * colspan="3" style="text-indent:2em" | 109.41(10) keV
 * data-sort-value='2(μs) 440' | 440(12) μs
 * (1)+
 * style="text-indent:1em" | 172m4Lu
 * colspan="3" style="text-indent:2em" | 213.57(17) keV
 * data-sort-value='1(ns) 150' | 150 ns
 * (6−)
 * 173Lu
 * style="text-align:right" | 71
 * style="text-align:right" | 102
 * 172.9389306(26)
 * data-sort-value='8(a) 1.37' | 1.37(1) y
 * EC
 * 173Yb
 * 7/2+
 * style="text-indent:1em" | 173mLu
 * colspan="3" style="text-indent:2em" | 123.672(13) keV
 * data-sort-value='2(μs) 074.2' | 74.2(10) μs
 * 5/2−
 * 174Lu
 * style="text-align:right" | 71
 * style="text-align:right" | 103
 * 173.9403375(26)
 * data-sort-value='8(a) 3.31' | 3.31(5) y
 * β+
 * 174Yb
 * (1)−
 * rowspan=2 style="text-indent:1em" | 174m1Lu
 * rowspan=2 colspan="3" style="text-indent:2em" | 170.83(5) keV
 * rowspan=2 data-sort-value='7(d) 142' | 142(2) d
 * IT (99.38%)
 * 174Lu
 * rowspan=2|6−
 * rowspan=2|
 * EC (.62%)
 * 174Yb
 * style="text-indent:1em" | 174m2Lu
 * colspan="3" style="text-indent:2em" | 240.818(4) keV
 * data-sort-value='1(ns) 395' | 395(15) ns
 * (3+)
 * style="text-indent:1em" | 174m3Lu
 * colspan="3" style="text-indent:2em" | 365.183(6) keV
 * data-sort-value='1(ns) 145' | 145(3) ns
 * (4−)
 * 175Lu
 * style="text-align:right" | 71
 * style="text-align:right" | 104
 * 174.9407718(23)
 * colspan=3 align=center data-sort-value='9' |Observationally stable
 * 7/2+
 * 0.9741(2)
 * style="text-indent:1em" | 175m1Lu
 * colspan="3" style="text-indent:2em" | 1392.2(6) keV
 * data-sort-value='2(μs) 984' | 984(30) μs
 * (19/2+)
 * style="text-indent:1em" | 175m2Lu
 * colspan="3" style="text-indent:2em" | 353.48(13) keV
 * data-sort-value='2(μs) 001.49' | 1.49(7) μs
 * 5/2−
 * rowspan=2|176Lu
 * rowspan=2 style="text-align:right" | 71
 * rowspan=2 style="text-align:right" | 105
 * rowspan=2|175.9426863(23)
 * rowspan=2|3.701(17)×1010 y
 * β−
 * 176Hf
 * rowspan=2|7−
 * rowspan=2|0.0259(2)
 * EC (0.45(26)%)
 * 176Yb
 * rowspan=2 style="text-indent:1em" | 176mLu
 * rowspan=2 colspan="3" style="text-indent:2em" | 122.855(6) keV
 * rowspan=2 data-sort-value='6(h) 03.66' | 3.664(19) h
 * β− (99.9%)
 * 176Hf
 * rowspan=2|1−
 * rowspan=2|
 * EC (.095%)
 * 176Yb
 * 177Lu
 * style="text-align:right" | 71
 * style="text-align:right" | 106
 * 176.9437581(23)
 * 6.6475(20) d
 * β−
 * 177Hf
 * 7/2+
 * style="text-indent:1em" | 177m1Lu
 * colspan="3" style="text-indent:2em" | 150.3967(10) keV
 * 130(3) ns
 * 9/2−
 * style="text-indent:1em" | 177m2Lu
 * colspan="3" style="text-indent:2em" | 569.7068(16) keV
 * 155(7) μs
 * 1/2+
 * rowspan=2 style="text-indent:1em" | 177m3Lu
 * rowspan=2 colspan="3" style="text-indent:2em" | 970.1750(24) keV
 * rowspan=2 data-sort-value='7(d) 160.44' | 160.44(6) d
 * β− (78.3%)
 * 177Hf
 * rowspan=2|23/2−
 * rowspan=2|
 * IT (21.7%)
 * 177Lu
 * style="text-indent:1em" | 177m4Lu
 * colspan="3" style="text-indent:2em" | 3900(10) keV
 * 7(2) min
 * (1)+
 * style="text-indent:1em" | 172m3Lu
 * colspan="3" style="text-indent:2em" | 109.41(10) keV
 * data-sort-value='2(μs) 440' | 440(12) μs
 * (1)+
 * style="text-indent:1em" | 172m4Lu
 * colspan="3" style="text-indent:2em" | 213.57(17) keV
 * data-sort-value='1(ns) 150' | 150 ns
 * (6−)
 * 173Lu
 * style="text-align:right" | 71
 * style="text-align:right" | 102
 * 172.9389306(26)
 * data-sort-value='8(a) 1.37' | 1.37(1) y
 * EC
 * 173Yb
 * 7/2+
 * style="text-indent:1em" | 173mLu
 * colspan="3" style="text-indent:2em" | 123.672(13) keV
 * data-sort-value='2(μs) 074.2' | 74.2(10) μs
 * 5/2−
 * 174Lu
 * style="text-align:right" | 71
 * style="text-align:right" | 103
 * 173.9403375(26)
 * data-sort-value='8(a) 3.31' | 3.31(5) y
 * β+
 * 174Yb
 * (1)−
 * rowspan=2 style="text-indent:1em" | 174m1Lu
 * rowspan=2 colspan="3" style="text-indent:2em" | 170.83(5) keV
 * rowspan=2 data-sort-value='7(d) 142' | 142(2) d
 * IT (99.38%)
 * 174Lu
 * rowspan=2|6−
 * rowspan=2|
 * EC (.62%)
 * 174Yb
 * style="text-indent:1em" | 174m2Lu
 * colspan="3" style="text-indent:2em" | 240.818(4) keV
 * data-sort-value='1(ns) 395' | 395(15) ns
 * (3+)
 * style="text-indent:1em" | 174m3Lu
 * colspan="3" style="text-indent:2em" | 365.183(6) keV
 * data-sort-value='1(ns) 145' | 145(3) ns
 * (4−)
 * 175Lu
 * style="text-align:right" | 71
 * style="text-align:right" | 104
 * 174.9407718(23)
 * colspan=3 align=center data-sort-value='9' |Observationally stable
 * 7/2+
 * 0.9741(2)
 * style="text-indent:1em" | 175m1Lu
 * colspan="3" style="text-indent:2em" | 1392.2(6) keV
 * data-sort-value='2(μs) 984' | 984(30) μs
 * (19/2+)
 * style="text-indent:1em" | 175m2Lu
 * colspan="3" style="text-indent:2em" | 353.48(13) keV
 * data-sort-value='2(μs) 001.49' | 1.49(7) μs
 * 5/2−
 * rowspan=2|176Lu
 * rowspan=2 style="text-align:right" | 71
 * rowspan=2 style="text-align:right" | 105
 * rowspan=2|175.9426863(23)
 * rowspan=2|3.701(17)×1010 y
 * β−
 * 176Hf
 * rowspan=2|7−
 * rowspan=2|0.0259(2)
 * EC (0.45(26)%)
 * 176Yb
 * rowspan=2 style="text-indent:1em" | 176mLu
 * rowspan=2 colspan="3" style="text-indent:2em" | 122.855(6) keV
 * rowspan=2 data-sort-value='6(h) 03.66' | 3.664(19) h
 * β− (99.9%)
 * 176Hf
 * rowspan=2|1−
 * rowspan=2|
 * EC (.095%)
 * 176Yb
 * 177Lu
 * style="text-align:right" | 71
 * style="text-align:right" | 106
 * 176.9437581(23)
 * 6.6475(20) d
 * β−
 * 177Hf
 * 7/2+
 * style="text-indent:1em" | 177m1Lu
 * colspan="3" style="text-indent:2em" | 150.3967(10) keV
 * 130(3) ns
 * 9/2−
 * style="text-indent:1em" | 177m2Lu
 * colspan="3" style="text-indent:2em" | 569.7068(16) keV
 * 155(7) μs
 * 1/2+
 * rowspan=2 style="text-indent:1em" | 177m3Lu
 * rowspan=2 colspan="3" style="text-indent:2em" | 970.1750(24) keV
 * rowspan=2 data-sort-value='7(d) 160.44' | 160.44(6) d
 * β− (78.3%)
 * 177Hf
 * rowspan=2|23/2−
 * rowspan=2|
 * IT (21.7%)
 * 177Lu
 * style="text-indent:1em" | 177m4Lu
 * colspan="3" style="text-indent:2em" | 3900(10) keV
 * 7(2) min
 * EC (0.45(26)%)
 * 176Yb
 * rowspan=2 style="text-indent:1em" | 176mLu
 * rowspan=2 colspan="3" style="text-indent:2em" | 122.855(6) keV
 * rowspan=2 data-sort-value='6(h) 03.66' | 3.664(19) h
 * β− (99.9%)
 * 176Hf
 * rowspan=2|1−
 * rowspan=2|
 * EC (.095%)
 * 176Yb
 * 177Lu
 * style="text-align:right" | 71
 * style="text-align:right" | 106
 * 176.9437581(23)
 * 6.6475(20) d
 * β−
 * 177Hf
 * 7/2+
 * style="text-indent:1em" | 177m1Lu
 * colspan="3" style="text-indent:2em" | 150.3967(10) keV
 * 130(3) ns
 * 9/2−
 * style="text-indent:1em" | 177m2Lu
 * colspan="3" style="text-indent:2em" | 569.7068(16) keV
 * 155(7) μs
 * 1/2+
 * rowspan=2 style="text-indent:1em" | 177m3Lu
 * rowspan=2 colspan="3" style="text-indent:2em" | 970.1750(24) keV
 * rowspan=2 data-sort-value='7(d) 160.44' | 160.44(6) d
 * β− (78.3%)
 * 177Hf
 * rowspan=2|23/2−
 * rowspan=2|
 * IT (21.7%)
 * 177Lu
 * style="text-indent:1em" | 177m4Lu
 * colspan="3" style="text-indent:2em" | 3900(10) keV
 * 7(2) min
 * rowspan=2 style="text-indent:1em" | 177m3Lu
 * rowspan=2 colspan="3" style="text-indent:2em" | 970.1750(24) keV
 * rowspan=2 data-sort-value='7(d) 160.44' | 160.44(6) d
 * β− (78.3%)
 * 177Hf
 * rowspan=2|23/2−
 * rowspan=2|
 * IT (21.7%)
 * 177Lu
 * style="text-indent:1em" | 177m4Lu
 * colspan="3" style="text-indent:2em" | 3900(10) keV
 * 7(2) min
 * style="text-indent:1em" | 177m4Lu
 * colspan="3" style="text-indent:2em" | 3900(10) keV
 * 7(2) min
 * 39/2−
 * 178Lu
 * style="text-align:right" | 71
 * style="text-align:right" | 107
 * 177.945955(3)
 * 28.4(2) min
 * β−
 * 178Hf
 * 1(+)
 * style="text-indent:1em" | 178mLu
 * colspan="3" style="text-indent:2em" | 123.8(26) keV
 * 23.1(3) min
 * β−
 * 178Hf
 * 9(−)
 * 179Lu
 * style="text-align:right" | 71
 * style="text-align:right" | 108
 * 178.947327(6)
 * 4.59(6) h
 * β−
 * 179Hf
 * 7/2(+)
 * style="text-indent:1em" | 179mLu
 * colspan="3" style="text-indent:2em" | 592.4(4) keV
 * 3.1(9) ms
 * IT
 * 179Lu
 * 1/2(+)
 * 180Lu
 * style="text-align:right" | 71
 * style="text-align:right" | 109
 * 179.94988(8)
 * 5.7(1) min
 * β−
 * 180Hf
 * 5+
 * style="text-indent:1em" | 180m1Lu
 * colspan="3" style="text-indent:2em" | 13.9(3) keV
 * ~1 s
 * IT
 * 180Lu
 * 3−
 * style="text-indent:1em" | 180m2Lu
 * colspan="3" style="text-indent:2em" | 624.0(5) keV
 * ≥1 ms
 * (9−)
 * 181Lu
 * style="text-align:right" | 71
 * style="text-align:right" | 110
 * 180.95197(32)#
 * 3.5(3) min
 * β−
 * 181Hf
 * (7/2+)
 * 182Lu
 * style="text-align:right" | 71
 * style="text-align:right" | 111
 * 181.95504(21)#
 * 2.0(2) min
 * β−
 * 182Hf
 * (0,1,2)
 * 183Lu
 * style="text-align:right" | 71
 * style="text-align:right" | 112
 * 182.95736(9)
 * 58(4) s
 * β−
 * 183Hf
 * (7/2+)
 * 184Lu
 * style="text-align:right" | 71
 * style="text-align:right" | 113
 * 183.96103(22)#
 * 20(3) s
 * β−
 * 184Hf
 * (3+)
 * 185Lu
 * style="text-align:right" | 71
 * style="text-align:right" | 114
 * 184.96354(32)#
 * 20# s
 * 7/2+#
 * 186Lu
 * style="text-align:right" | 71
 * style="text-align:right" | 115
 * 185.96745(43)#
 * 6# s
 * 187Lu
 * style="text-align:right" | 71
 * style="text-align:right" | 116
 * 186.97019(43)#
 * 7# s
 * 7/2+#
 * 188Lu
 * style="text-align:right" | 71
 * style="text-align:right" | 117
 * 187.97443(43)#
 * 1# s
 * 189Lu
 * style="text-align:right" | 71
 * style="text-align:right" | 118
 * 190Lu
 * style="text-align:right" | 71
 * style="text-align:right" | 119
 * 185Lu
 * style="text-align:right" | 71
 * style="text-align:right" | 114
 * 184.96354(32)#
 * 20# s
 * 7/2+#
 * 186Lu
 * style="text-align:right" | 71
 * style="text-align:right" | 115
 * 185.96745(43)#
 * 6# s
 * 187Lu
 * style="text-align:right" | 71
 * style="text-align:right" | 116
 * 186.97019(43)#
 * 7# s
 * 7/2+#
 * 188Lu
 * style="text-align:right" | 71
 * style="text-align:right" | 117
 * 187.97443(43)#
 * 1# s
 * 189Lu
 * style="text-align:right" | 71
 * style="text-align:right" | 118
 * 190Lu
 * style="text-align:right" | 71
 * style="text-align:right" | 119
 * 188Lu
 * style="text-align:right" | 71
 * style="text-align:right" | 117
 * 187.97443(43)#
 * 1# s
 * 189Lu
 * style="text-align:right" | 71
 * style="text-align:right" | 118
 * 190Lu
 * style="text-align:right" | 71
 * style="text-align:right" | 119
 * 189Lu
 * style="text-align:right" | 71
 * style="text-align:right" | 118
 * 190Lu
 * style="text-align:right" | 71
 * style="text-align:right" | 119
 * 190Lu
 * style="text-align:right" | 71
 * style="text-align:right" | 119
 * 190Lu
 * style="text-align:right" | 71
 * style="text-align:right" | 119
 * style="text-align:right" | 71
 * style="text-align:right" | 119

Lutetium-177
Lutetium (177Lu) chloride, sold under the brand name Lumark among others, is used for radiolabeling other medicines, either as an anti-cancer therapy or for scintigraphy (medical radio-imaging). Its most common side effects are anaemia (low red blood cell counts), thrombocytopenia (low blood platelet counts), leucopenia (low white blood cell counts), lymphopenia (low levels of lymphocytes, a particular type of white blood cell), nausea (feeling sick), vomiting and mild and temporary hair loss.