Muon radiative energy loss (in 1.0E06 cm^2/g) in lutetium (Lu) with Z = 71, A = 174.9668(1) (f12.0,4f12.4) E (GeV) b_brem b_pair b_nucl b_total 2. 1.7575 0.4975 0.3689 2.6239 5. 2.4332 1.8507 0.3940 4.6779 10. 2.9842 2.9002 0.3863 6.2707 20. 3.5495 3.8865 0.3675 7.8036 50. 4.2898 5.3800 0.3570 10.0268 100. 4.8166 6.3692 0.3496 11.5355 200. 5.2982 7.2484 0.3462 12.8928 500. 5.8397 8.0559 0.3463 14.2420 1000. 6.1665 8.4846 0.3517 15.0029 2000. 6.4212 8.7940 0.3602 15.5754 5000. 6.6581 9.0533 0.3757 16.0871 10000. 6.7755 9.1728 0.3912 16.3395 20000. 6.8535 9.2512 0.4091 16.5138 50000. 6.9180 9.3097 0.4371 16.6648 100000. 6.9467 9.3339 0.4611 16.7417