Isotopes of lutetium

Naturally occurring lutetium (₇₁Lu) is composed of one stable isotope ¹⁷⁵Lu (97.40% natural abundance) and one long-lived radioisotope, ¹⁷⁶Lu with a half-life of 37 billion years (2.60% natural abundance). Forty synthetic radioisotopes have been added from ¹⁴⁹Lu to ¹⁹⁰Lu, with the most stable 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. Of the meta states known for this element, the most stable are ^177m3Lu (t_1/2 160.4 days) and ^174mLu (t_1/2 142 days).

The primary decay mode before the most abundant stable isotope, ¹⁷⁵Lu, is electron capture (with some alpha and positron emission), leading to ytterbium or less often thulium isotopes, and the primary mode after is beta emission giving hafnium isotopes.

All isotopes of lutetium are either radioactive or, for the lone stable isotope ¹⁷⁵Lu, observationally stable, meaning that it is predicted to be radioactive (to alpha decay) but no decay has been observed.

List of isotopes

|-id=Lutetium-149 | ¹⁴⁹Lu | style="text-align:right" | 71 | style="text-align:right" | 78 | | | p | ¹⁴⁸Yb | 11/2− | |-id=Lutetium-150 | ¹⁵⁰Lu | style="text-align:right" | 71 | style="text-align:right" | 79 | 149.97341(32)# | 45(3)&nbsp;ms | p | ¹⁴⁹Yb | (5−) | |-id=Lutetium-150m | style="text-indent:1em" | ^150mLu | colspan="3" style="text-indent:2em" | 22(5)&nbsp;keV | 40(7)&nbsp;μs | [proton emission|p | ¹⁴⁹Yb | (8+) | |-id=Lutetium-151 | rowspan=2|¹⁵¹Lu | rowspan=2 style="text-align:right" | 71 | rowspan=2 style="text-align:right" | 80 | rowspan=2|150.96747(32)# | rowspan=2|78.4(9)&nbsp;ms | p (?%) | ¹⁵⁰Yb | rowspan=2|11/2− | rowspan=2| |- | β⁺ (?%) | ¹⁵¹Yb |-id=Lutetium-151m | style="text-indent:1em" | ^151mLu | colspan="3" style="text-indent:2em" | 57(4)&nbsp;keV | 16.0(5)&nbsp;μs | p | ¹⁵⁰Yb | 3/2+ | |-id=Lutetium-152 | rowspan=2|¹⁵²Lu | rowspan=2 style="text-align:right" | 71 | rowspan=2 style="text-align:right" | 81 | rowspan=2|151.96412(21)# | rowspan=2| 650(70)&nbsp;ms | β⁺ (85%) | ¹⁵²Yb | rowspan=2|(4−, 5−, 6−) | rowspan=2| |- | β⁺, p (15%) | ¹⁵¹Tm |-id=Lutetium-153 | rowspan=2|¹⁵³Lu | rowspan=2 style="text-align:right" | 71 | rowspan=2 style="text-align:right" | 82 | rowspan=2|152.95880(16) | rowspan=2| 0.9(2)&nbsp;s | α (?%) | ¹⁴⁹Tm | rowspan=2|11/2− | rowspan=2| |- | β⁺ (?%) | ¹⁵³Yb |-id=Lutetium-153m1 | style="text-indent:1em" | ^153m1Lu | colspan="3" style="text-indent:2em" | 80(5)&nbsp;keV | 1#&nbsp;s | IT | ¹⁵³Lu | 1/2+ | |-id=Lutetium-153m2 | style="text-indent:1em" | ^153m2Lu | colspan="3" style="text-indent:2em" | 2502.5(4)&nbsp;keV | >0.1&nbsp;μs | IT | ¹⁵³Lu | 23/2− | |-id=Lutetium-153m3 | style="text-indent:1em" | ^153m3Lu | colspan="3" style="text-indent:2em" | 2632.9(5)&nbsp;keV | 15(3)&nbsp;μs | IT | ¹⁵³Lu | 27/2− | |-id=Lutetium-154 | ¹⁵⁴Lu | style="text-align:right" | 71 | style="text-align:right" | 83 | 153.95742(22)# | 1#&nbsp;s | | | (2−) | |-id=Lutetium-154m1 | rowspan=3 style="text-indent:1em" | ^154m1Lu | rowspan=3 colspan="3" style="text-indent:2em" | 62(12)&nbsp;keV | rowspan=3|1.12(8)&nbsp;s | β⁺ (?%) | ¹⁵⁴Yb | rowspan=3|(9+) | rowspan=3| |- | β⁺p (?%) | ¹⁵³Tm |- | β⁺α (?%) | ¹⁵⁰Er |-id=Lutetium-154m2 | style="text-indent:1em" | ^154m2Lu | colspan="3" style="text-indent:2em" | 2724(100)#&nbsp;keV | 35(3)&nbsp;μs | IT | ¹⁵⁴Lu | (17+) | |-id=Lutetium-155 | rowspan=2|¹⁵⁵Lu | rowspan=2 style="text-align:right" | 71 | rowspan=2 style="text-align:right" | 84 | rowspan=2|154.954326(21) | rowspan=2|68(2)&nbsp;ms | α (90%) | ¹⁵¹Tm | rowspan=2|11/2− | rowspan=2| |- | β⁺ (10%) | ¹⁵⁵Yb |-id=Lutetium-155m1 | rowspan=2 style="text-indent:1em" | ^155m1Lu | rowspan=2 colspan="3" style="text-indent:2em" | 21(4)&nbsp;keV | rowspan=2|138(9)&nbsp;ms | α (76%) | ¹⁵¹Tm | rowspan=2|1/2+ | rowspan=2| |- | β⁺ (24%) | ¹⁵⁵Yb |-id=Lutetium-155m2 | style="text-indent:1em" | ^155m2Lu | colspan="3" style="text-indent:2em" | 1780.3(18)&nbsp;keV | 2.69(3)&nbsp;ms | α | ¹⁵¹Tm | 25/2−# | |-id=Lutetium-156 | ¹⁵⁶Lu | style="text-align:right" | 71 | style="text-align:right" | 85 | 155.953087(58) | 494(12)&nbsp;ms | α | ¹⁵²Tm | (2)− | |-id=Lutetium-156m1 | style="text-indent:1em" | ^156m1Lu | colspan="3" style="text-indent:2em" | 10(250)&nbsp;keV | 198(2)&nbsp;ms | α | ¹⁵²Tm | 10+ | |-id=Lutetium-156m2 | style="text-indent:1em" | ^156m2Lu | colspan="3" style="text-indent:2em" | 2611(250)&nbsp;keV | 179(4)&nbsp;ns | IT | ¹⁵⁶Lu | 19− | |-id=Lutetium-157 | rowspan=2|¹⁵⁷Lu | rowspan=2 style="text-align:right" | 71 | rowspan=2 style="text-align:right" | 86 | rowspan=2|156.950145(13) | rowspan=2|7.7(20)&nbsp;s | β⁺ (?%) | ¹⁵⁷Yb | rowspan=2|(1/2+) | rowspan=2| |- | α (?%) | ¹⁵³Tm |-id=Lutetium-157m | rowspan=2 style="text-indent:1em" | ^157mLu | rowspan=2 colspan="3" style="text-indent:2em" | 20.9(20)&nbsp;keV | rowspan=2|4.79(12)&nbsp;s | β⁺ (92.3%) | ¹⁵⁷Yb | rowspan=2|(11/2−) | rowspan=2| |- | α (7.7%) | ¹⁵³Tm |-id=Lutetium-158 | rowspan=2|¹⁵⁸Lu | rowspan=2 style="text-align:right" | 71 | rowspan=2 style="text-align:right" | 87 | rowspan=2|157.949316(16) | rowspan=2|10.6(3)&nbsp;s | β⁺ (99.09%) | ¹⁵⁸Yb | rowspan=2|(2)− | rowspan=2| |- | α (0.91%) | ¹⁵⁴Tm |-id=Lutetium-159 | rowspan=2|¹⁵⁹Lu | rowspan=2 style="text-align:right" | 71 | rowspan=2 style="text-align:right" | 88 | rowspan=2|158.946636(40) | rowspan=2|12.1(10)&nbsp;s | β⁺ | ¹⁵⁹Yb | rowspan=2|1/2+ | rowspan=2| |- | α (rare) | ¹⁵⁵Tm |-id=Lutetium-160 | ¹⁶⁰Lu | style="text-align:right" | 71 | style="text-align:right" | 89 | 159.946033(61) | 36.1(3)&nbsp;s | β⁺ | ¹⁶⁰Yb | 2−# | |-id=Lutetium-160m | style="text-indent:1em" | ^160mLu | colspan="3" style="text-indent:2em" | 0(100)#&nbsp;keV | 40(1)&nbsp;s | β⁺ | ¹⁶⁰Yb | | |-id=Lutetium-161 | ¹⁶¹Lu | style="text-align:right" | 71 | style="text-align:right" | 90 | 160.943572(30) | 77(2)&nbsp;s | β⁺ | ¹⁶¹Yb | 1/2+ | |-id=Lutetium-161m | style="text-indent:1em" | ^161mLu | colspan="3" style="text-indent:2em" | 182(5)#&nbsp;keV | 7.3(4)&nbsp;ms | IT | ¹⁶¹Lu | (9/2−) | |-id=Lutetium-162 | ¹⁶²Lu | style="text-align:right" | 71 | style="text-align:right" | 91 | 161.943283(81) | 1.37(2)&nbsp;min | β⁺ | ¹⁶²Yb | 1− | |-id=Lutetium-162m1 | style="text-indent:1em" | ^162m1Lu | colspan="3" style="text-indent:2em" | 120(200)#&nbsp;keV | 1.5&nbsp;min | β⁺ | ¹⁶²Yb | 4−# | |-id=Lutetium-162m2 | style="text-indent:1em" | ^162m2Lu | colspan="3" style="text-indent:2em" | 300(200)#&nbsp;keV | 1.9&nbsp;min | | | 9−# | |-id=Lutetium-163 | ¹⁶³Lu | style="text-align:right" | 71 | style="text-align:right" | 92 | 162.941179(30) | 3.97(13)&nbsp;min | β⁺ | ¹⁶³Yb | 1/2+ | |-id=Lutetium-164 | ¹⁶⁴Lu | style="text-align:right" | 71 | style="text-align:right" | 93 | 163.941339(30) | 3.14(3)&nbsp;min | β⁺ | ¹⁶⁴Yb | 1− | |-id=Lutetium-165 | ¹⁶⁵Lu | style="text-align:right" | 71 | style="text-align:right" | 94 | 164.939407(28) | 10.74(10)&nbsp;min | β⁺ | ¹⁶⁵Yb | 1/2+ | |-id=Lutetium-166 | ¹⁶⁶Lu | style="text-align:right" | 71 | style="text-align:right" | 95 | 165.939859(32) | 2.65(10)&nbsp;min | β⁺ | ¹⁶⁶Yb | 6− | |-id=Lutetium-166m1 | rowspan=2 style="text-indent:1em" | ^166m1Lu | rowspan=2 colspan="3" style="text-indent:2em" | 34.37(22)&nbsp;keV | rowspan=2|1.41(10)&nbsp;min | β⁺ (58%) | ¹⁶⁶Yb | rowspan=2|3− | rowspan=2| |- | IT (42%) | ¹⁶⁶Lu |-id=Lutetium-166m2 | rowspan=2 style="text-indent:1em" | ^166m2Lu | rowspan=2 colspan="3" style="text-indent:2em" | 43.0(4)&nbsp;keV | rowspan=2|2.12(10)&nbsp;min | β⁺ (90%) | ¹⁶⁶Yb | rowspan=2|0− | rowspan=2| |- | IT (10%) | ¹⁶⁶Lu |-id=Lutetium-167 | ¹⁶⁷Lu | style="text-align:right" | 71 | style="text-align:right" | 96 | 166.938243(40) | 51.5(10)&nbsp;min | β⁺ | ¹⁶⁷Yb | 7/2+ | |-id=Lutetium-167m | style="text-indent:1em" | ^167mLu | colspan="3" style="text-indent:2em" | 50(40)#&nbsp;keV | >1&nbsp;min | | | 1/2+ | |-id=Lutetium-168 | ¹⁶⁸Lu | style="text-align:right" | 71 | style="text-align:right" | 97 | 167.938730(41) | 5.5(1)&nbsp;min | β⁺ | ¹⁶⁸Yb | 6− | |-id=Lutetium-168m | style="text-indent:1em" | ^168mLu | colspan="3" style="text-indent:2em" | 160(40)&nbsp;keV | 6.7(4)&nbsp;min | β⁺ | ¹⁶⁸Yb | 3+ | |-id=Lutetium-169 | ¹⁶⁹Lu | style="text-align:right" | 71 | style="text-align:right" | 98 | 168.9376458(32) | 34.06(5)&nbsp;h | β⁺ | ¹⁶⁹Yb | 7/2+ | |-id=Lutetium-169m | style="text-indent:1em" | ^169mLu | colspan="3" style="text-indent:2em" | 29.0(5)&nbsp;keV | 160(10)&nbsp;s | IT | ¹⁶⁹Lu | 1/2− | |-id=Lutetium-170 | ¹⁷⁰Lu | style="text-align:right" | 71 | style="text-align:right" | 99 | 169.938479(18) | 2.012(30)&nbsp;d | β⁺ | ¹⁷⁰Yb | 0+ | |-id=Lutetium-170m | style="text-indent:1em" | ^170mLu | colspan="3" style="text-indent:2em" | 92.91(9)&nbsp;keV | 670(100)&nbsp;ms | IT | ¹⁷⁰Lu | 4− | |-id=Lutetium-171 | ¹⁷¹Lu | style="text-align:right" | 71 | style="text-align:right" | 100 | 170.9379186(20) | 8.247(23)&nbsp;d | β⁺ | ¹⁷¹Yb | 7/2+ | |-id=Lutetium-171m | style="text-indent:1em" | ^171mLu | colspan="3" style="text-indent:2em" | 71.13(8)&nbsp;keV | 79(2)&nbsp;s | IT | ¹⁷¹Lu | 1/2− | |-id=Lutetium-172 | ¹⁷²Lu | style="text-align:right" | 71 | style="text-align:right" | 101 | 171.9390913(25) | 6.70(3)&nbsp;d | β⁺ | ¹⁷²Yb | 4− | |-id=Lutetium-172m1 | style="text-indent:1em" | ^172m1Lu | colspan="3" style="text-indent:2em" | 41.86(4)&nbsp;keV | 3.7(5)&nbsp;min | IT | ¹⁷²Lu | 1− | |-id=Lutetium-172m2 | style="text-indent:1em" | ^172m2Lu | colspan="3" style="text-indent:2em" | 65.79(4)&nbsp;keV | 332(20)&nbsp;ns | IT | ¹⁷²Lu | (1)+ | |-id=Lutetium-172m3 | style="text-indent:1em" | ^172m3Lu | colspan="3" style="text-indent:2em" | 109.41(10)&nbsp;keV | 440(12)&nbsp;μs | IT | ¹⁷²Lu | (1)+ | |-id=Lutetium-172m4 | style="text-indent:1em" | ^172m4Lu | colspan="3" style="text-indent:2em" | 213.57(17)&nbsp;keV | 150&nbsp;ns | IT | ¹⁷²Lu | (6−) | |-id=Lutetium-173 | ¹⁷³Lu | style="text-align:right" | 71 | style="text-align:right" | 102 | 172.9389357(17) | 1.37(1)&nbsp;y | EC | ¹⁷³Yb | 7/2+ | |-id=Lutetium-173m | style="text-indent:1em" | ^173mLu | colspan="3" style="text-indent:2em" | 123.672(13)&nbsp;keV | 74.2(10)&nbsp;μs | IT | ¹⁷³Lu | 5/2− | |-id=Lutetium-174 | ¹⁷⁴Lu | style="text-align:right" | 71 | style="text-align:right" | 103 | 173.9403428(17) | 3.31(5)&nbsp;y | β⁺ | ¹⁷⁴Yb | 1− | |-id=Lutetium-174m1 | rowspan=2 style="text-indent:1em" | ^174m1Lu | rowspan=2 colspan="3" style="text-indent:2em" | 170.83(5)&nbsp;keV | rowspan=2| 142(2)&nbsp;d | IT (99.38%) | ¹⁷⁴Lu | rowspan=2|6− | rowspan=2| |- | EC (0.62%) | ¹⁷⁴Yb |-id=Lutetium-174m2 | style="text-indent:1em" | ^174m2Lu | colspan="3" style="text-indent:2em" | 240.818(4)&nbsp;keV | 395(15)&nbsp;ns | IT | ¹⁷⁴Lu | 3+ | |-id=Lutetium-174m3 | style="text-indent:1em" | ^174m3Lu | colspan="3" style="text-indent:2em" | 365.183(6)&nbsp;keV | 145(3)&nbsp;ns | IT | ¹⁷⁴Lu | 4− | |-id=Lutetium-174m4 | style="text-indent:1em" | ^174m4Lu | colspan="3" style="text-indent:2em" | 1855.7(5)&nbsp;keV | 194(24)&nbsp;ns | IT | ¹⁷⁴Lu | 13+ | |-id=Lutetium-174m5 | style="text-indent:1em" | ^174m5Lu | colspan="3" style="text-indent:2em" | 4068.4(9)&nbsp;keV | 97(10)&nbsp;ns | IT | ¹⁷⁴Lu | (21+) | |-id=Lutetium-174m6 | style="text-indent:1em" | ^174m6Lu | colspan="3" style="text-indent:2em" | 5849.6(9)&nbsp;keV | 242(19)&nbsp;ns | IT | ¹⁷⁴Lu | (26−) | |-id=Lutetium-175 | ¹⁷⁵Lu | style="text-align:right" | 71 | style="text-align:right" | 104 | 174.9407772(13) | colspan=3 align=center |Observationally stable | 7/2+ | 0.97401(13) |-id=Lutetium-175m1 | style="text-indent:1em" | ^175m1Lu | colspan="3" style="text-indent:2em" | 353.48(13)&nbsp;keV | 1.49(7)&nbsp;μs | IT | ¹⁷⁵Lu | 5/2− | |-id=Lutetium-175m2 | style="text-indent:1em" | ^175m2Lu | colspan="3" style="text-indent:2em" | 1392.4(4)&nbsp;keV | 984(30)&nbsp;μs | IT | ¹⁷⁵Lu | 19/2+ | |-id=Lutetium-176 | ¹⁷⁶Lu | style="text-align:right" | 71 | style="text-align:right" | 105 | 175.9426917(13) | 3.701(17)×10¹⁰&nbsp;y | β^− | ¹⁷⁶Hf | 7− | 0.02599(13) |-id=Lutetium-176m1 | rowspan=2 style="text-indent:1em" | ^176m1Lu | rowspan=2 colspan="3" style="text-indent:2em" | 122.845(4)&nbsp;keV | rowspan=2| 3.664(19)&nbsp;h | β^− (99.90%) | ¹⁷⁶Hf | rowspan=2|1− | rowspan=2| |- | EC (0.095%) | ¹⁷⁶Yb |-id=Lutetium-176m2 | style="text-indent:1em" | ^176m2Lu | colspan="3" style="text-indent:2em" | 1514.5(5)&nbsp;keV | 312(69)&nbsp;ns | IT | ¹⁷⁶Lu | 12+ | |-id=Lutetium-176m3 | style="text-indent:1em" | ^176m3Lu | colspan="3" style="text-indent:2em" | 1587.8(6)&nbsp;keV | 40(3)&nbsp;μs | IT | ¹⁷⁶Lu | 14+ | |- | ¹⁷⁷Lu | style="text-align:right" | 71 | style="text-align:right" | 106 | 176.9437636(13) | 6.6443(9)&nbsp;d | β^− | ¹⁷⁷Hf | 7/2+ | |-id=Lutetium-177m1 | style="text-indent:1em" | ^177m1Lu | colspan="3" style="text-indent:2em" | 150.3984(10)&nbsp;keV | 130.1(24)&nbsp;ns | IT | ¹⁷⁷Lu | 9/2− | |-id=Lutetium-177m2 | style="text-indent:1em" | ^177m2Lu | colspan="3" style="text-indent:2em" | 569.6721(15)&nbsp;keV | 155(7)&nbsp;μs | IT | ¹⁷⁷Lu | 1/2+ | |-id=Lutetium-177m3 | rowspan=2 style="text-indent:1em" | ^177m3Lu | rowspan=2 colspan="3" style="text-indent:2em" | 970.1757(24)&nbsp;keV | rowspan=2|160.4(3)&nbsp;d | β^− (77.30%) | ¹⁷⁷Hf | rowspan=2|23/2− | rowspan=2| |- | IT (22.70%) | ¹⁷⁷Lu |-id=Lutetium-177m4 | style="text-indent:1em" | ^177m4Lu | colspan="3" style="text-indent:2em" | 2771.7(5)&nbsp;keV | 625(62)&nbsp;ns | IT | ¹⁷⁷Lu | 33/2+ | |-id=Lutetium-177m5 | style="text-indent:1em" | ^177m5Lu | colspan="3" style="text-indent:2em" | 3530.4(6)&nbsp;keV | 6(2)&nbsp;μs | IT | ¹⁷⁷Lu | 39/2− | |-id=Lutetium-178 | ¹⁷⁸Lu | style="text-align:right" | 71 | style="text-align:right" | 107 | 177.9459601(24) | 28.4(2)&nbsp;min | β^− | ¹⁷⁸Hf | 1+ | |-id=Lutetium-178m | style="text-indent:1em" | ^178mLu | colspan="3" style="text-indent:2em" | 123.8(26)&nbsp;keV | 23.1(3)&nbsp;min | β^− | ¹⁷⁸Hf | 9− | |-id=Lutetium-179 | ¹⁷⁹Lu | style="text-align:right" | 71 | style="text-align:right" | 108 | 178.9473330(55) | 4.59(6)&nbsp;h | β^− | ¹⁷⁹Hf | 7/2+ | |-id=Lutetium-179m | style="text-indent:1em" | ^179mLu | colspan="3" style="text-indent:2em" | 592.4(4)&nbsp;keV | 3.1(9)&nbsp;ms | IT | ¹⁷⁹Lu | 1/2+ | |-id=Lutetium-180 | ¹⁸⁰Lu | style="text-align:right" | 71 | style="text-align:right" | 109 | 179.949891(76) | 5.7(1)&nbsp;min | β^− | ¹⁸⁰Hf | 5+ | |-id=Lutetium-180m1 | style="text-indent:1em" | ^180m1Lu | colspan="3" style="text-indent:2em" | 13.9(3)&nbsp;keV | ~1&nbsp;s | | | 3− | |-id=Lutetium-180m2 | style="text-indent:1em" | ^180m2Lu | colspan="3" style="text-indent:2em" | 624.0(5)&nbsp;keV | >1&nbsp;ms | IT | ¹⁸⁰Lu | (9−) | |-id=Lutetium-181 | ¹⁸¹Lu | style="text-align:right" | 71 | style="text-align:right" | 110 | 180.95191(14) | 3.5(3)&nbsp;min | β^− | ¹⁸¹Hf | 7/2+# | |-id=Lutetium-182 | ¹⁸²Lu | style="text-align:right" | 71 | style="text-align:right" | 111 | 181.95516(22)# | 2.0(2)&nbsp;min | β^− | ¹⁸²Hf | 1−# | |-id=Lutetium-183 | ¹⁸³Lu | style="text-align:right" | 71 | style="text-align:right" | 112 | 182.957363(86) | 58(4)&nbsp;s | β^− | ¹⁸³Hf | 7/2+# | |-id=Lutetium-184 | ¹⁸⁴Lu | style="text-align:right" | 71 | style="text-align:right" | 113 | 183.96103(22)# | 20(3)&nbsp;s | β^− | ¹⁸⁴Hf | (3+) | |-id=Lutetium-185 | ¹⁸⁵Lu | style="text-align:right" | 71 | style="text-align:right" | 114 | 184.96354(32)# | 20#&nbsp;s<br />[>300&nbsp;ns] | | | 7/2+# | |-id=Lutetium-186 | ¹⁸⁶Lu | style="text-align:right" | 71 | style="text-align:right" | 115 | 185.96745(43)# | 6#&nbsp;s<br />[>300&nbsp;ns] | | | | |-id=Lutetium-187 | ¹⁸⁷Lu | style="text-align:right" | 71 | style="text-align:right" | 116 | 186.97019(43)# | 7#&nbsp;s<br />[>300&nbsp;ns] | | | 7/2+# | |-id=Lutetium-188 | ¹⁸⁸Lu | style="text-align:right" | 71 | style="text-align:right" | 117 | 187.97443(43)# | 1#&nbsp;s<br />[>300&nbsp;ns] | | | | |-id=Lutetium-189 | ¹⁸⁹Lu | style="text-align:right" | 71 | style="text-align:right" | 118 | | | | | | |-id=Lutetium-190 | ¹⁹⁰Lu | style="text-align:right" | 71 | style="text-align:right" | 119 | | | | | |

Lutetium-177

Lutetium (¹⁷⁷Lu), that decays with emission of a low-energy electron, is a useful for treating some cancerous tumors. Several compounds of 177Lu are available for this purpose:

1) Lutetium chloride, LuCl₃, 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.

2) Lutetium (177Lu) oxodotreotide, also known as [Lutetium (177Lu) dotatate]] "Lutathera", has been approved for some types of tumors.

3) Lutetium (177Lu) vipivotide tetraxetan "Pluvicto" has also been approved.

See also

Daughter products other than lutetium

• Isotopes of hafnium
• Isotopes of ytterbium
• Isotopes of thulium
• Isotopes of erbium

References