- A blood test for Alzheimer's disease biomarkers helped improve diagnostic accuracy among specialists and primary care physicians in a real-world study.
- In a head-to-head comparison after reviewing blood test results, primary care physicians and specialists both had a diagnostic accuracy of around 90%.
- For primary care physicians, the test was most helpful in ruling out Alzheimer's disease.
LONDON, July 14, 2026 /PRNewswire/ -- Knowledge of blood test results enables primary care physicians to diagnose Alzheimer's disease with essentially the same accuracy as specialists, a major step toward expanding access to an accurate diagnosis for millions of patients, suggests new data reported for the first time at the Alzheimer's Association International Conference® (AAIC®) 2026 in London and online.
k5:G 4=2DDlQ!#}0x>365565pDD6E#676C6?46Q :5lQs:GpDD6E!=246w@=56C`QmkAmk:>8 DC4lQ9EEADi^^>>I]AC?6HDH:C6]4@>^>65:2^|$cbabed^p=K96:>6CD\pDD?\G`\{@8@];A8n:5l~pafe`dbbQ E:E=6lQp=K96:>6CUR_bhjD pDD@4:2E:@? {@8@Q 2=ElQp=K96:>6CUR_bhjD pDD@4:2E:@? {@8@Q ^mk^Amk^5:Gm
kAmx? @?6 @7 E96 7:CDE C62=\H@C=5 DEF5:6D @7 :ED <:?5 — :?4=F5:?8 >@C6 E92? `[b__ A2E:6?ED 2?5 `ed A9JD:4:2?D — C6D62C496CD 7@F?5 E92E 2 3=@@5\32D65 3:@>2C<6C E6DE D:8?:7:42?E=J :>AC@G65 E96 244FC24J @7 p=K96:>6CVD 5:28?@D:D :? 3@E9 AC:>2CJ 2?5 DA64:2=EJ 42C6 D6EE:?8D] %96 E6DE >62DFC6D 2>J=@:5 36E2 2?5 A9@DA9@CJ=2E65 E2F[ 3@E9 @7 H9:49 2C6 23?@C>2= 3C2:? AC@E6:?D =:?<65 E@ p=K96:>6CVD 5:D62D6]k^Am
kAmx? 2 5:C64E 4@>A2C:D@? 2>@?8 AC:>2CJ 42C6 A2E:6?ED[ AC:>2CJ 42C6 A9JD:4:2?D 249:6G65 ?62C=J E96 D2>6 5:28?@DE:4 244FC24J 2D 56>6?E:2 DA64:2=:DED — 2C@F?5 h_T 7@C 3@E9] p7E6C D66:?8 E96 3=@@5 E6DE C6DF=ED[ E96 A9JD:4:2?D 492?865 5:28?@D6D :? 23@FE @?6\E9:C5 @7 E96 A2E:6?ED 2?5 492?865 E96:C A=2?D 7@C 7FEFC6 42C6 2?5 6I2>:?2E:@?D 7@C >@C6 E92? 92=7 @7 E96 A2E:6?ED]k^Am
kAmQ(6 H2?E65 E@ 7:?5 @FE H96E96C 2 D:>A=6 3=@@5 E6DE 7@C p=K96:>6CVD 492?86D 9@H 5@4E@CDÂ 24EF2==J 5:28?@D6Â 2?5 >2?286 E96:C A2E:6?ED :? 6G6CJ52J 4=:?:42= 42C6[Q D2:5 $632DE:2? !2=>BG:DE[ |]s][ !9]s][ =625 2FE9@C @7 E96 DEF5J[ ?6FC@=@8:DE 2?5 2DD@4:2E6 AC@76DD@C @7 ?6FC@=@8J 2E {F?5 &?:G6CD:EJ[ $H656?] Qp44FC2E6 p=K96:>6CVD 5:28?@D:D 92D =2C86=J 366? =:>:E65 E@ DA64:2=:DE D6EE:?8D] ~FC 7:?5:?8D D9@H E92E E9:D 3=@@5 E6DE 4@F=5 3C:?8 E92E =6G6= @7 244FC24J :?E@ AC:>2CJ 42C6[ H96C6 >@DE A2E:6?ED 2C6 7:CDE D66?[ 4=@D:?8 E96 82A 36EH66? AC:>2CJ 42C6 2?5 DA64:2=EJ 42C6]Qk^Am
kAm%96 3=@@5 E6DE H2D >@DE FD67F= :? AC:>2CJ 42C6 7@C CF=:?8 @FE p=K96:>6CVD[ sC] !2=>BG:DE D2:5] !C:>2CJ 42C6 4=:?:4:2?D C6>2:?65 42FE:@FD 23@FE FD:?8 :E E@ 5:28?@D6 E96 5:D62D6[ AC676CC:?8 E@ D6?5 E96:C A2E:6?ED E@ 2 DA64:2=:DE 7@C 4@?7:C>2E:@?[ 2D :D 2AAC@AC:2E6[ 96 ?@E65]k^Am
kAm%@52J[ E96 DE2?52C5 @7 42C6 7@C 4@?7:C>:?8 p=K96:>6CVD 5:D62D6 :?G@=G6D DA64:2=:K65 E6DED DF49 2D !t% D42?D W3C2:? :>28:?8X 2?5 DA:?2= 7=F:5 2?2=JD:D[ E@@=D E92E 2C6 @7E6? 4@DE=J 2?5 ?@E H:56=J 2G2:=23=6 @FED:56 @7 >6>@CJ 4=:?:4D]k^Am
kAmQ%9:D :D 9@A67F= ?6HD 7@C A2E:6?ED[ H9@ @7E6? 7246 56=2JD[ C676CC2=D 2?5 =@?8 H2:E E:>6D 367@C6 C646:G:?8 2 4=62C 5:28?@D:D 2?5 EC62E>6?E[Q D2:5 k2 9C67lQ9EEADi^^6586]AC?6HDH:C6]4@>^4^=:?<^nEl_U2>Aj=l6?U2>Aj@lcfb_g_a\`U2>Aj9lbfb`g_haadU2>AjFl9EEADTbpTauTauHHH]2=K]@C8TauAC6DDTauDA@<6DA6@A=6TauD966?2\2FC@C2\>\5U2>Aj2l$966?2ZpFC@C2TarZ|]s]TarQ E2C86ElQ03=2?<Q C6=lQ?@7@==@HQm$966?2 pFC@C2[ |]s][k^2m p=K96:>6CVD pDD@4:2E:@? G:46 AC6D:56?E @7 >65:42= 2772:CD] Q%96 C6DF=ED DF886DE 9:89=J 244FC2E6 3=@@5 E6DED 42? 492?86 — 6G6? :>AC@G6 — 5:28?@D:D 2?5 >65:42= >2?286>6?E :? AC:>2CJ 2?5 D64@?52CJ 42C6[ >62?:?8 5@4E@CD 2== 2=@?8 E96 42C6 4@?E:?FF> >2J 7:?5 E96> FD67F=] %9:D DEF5J DEC@?8=J DF886DED E96C6 :D 8C62E 4=:?:42= FE:=:EJ 7@C E9:D E6DE]Qk^Am
kAm%96 :?E6C:> C6DF=ED 7C@> E96 DEF5J :?4=F565 `[b`_ A2E:6?ED H:E9 >:=5 4@8?:E:G6 :>A2:C>6?E W|rxX @C 56>6?E:2 :? $H656?[ :?4=F5:?8 haf 6G2=F2E65 3J DA64:2=:DED 2?5 bgb 6G2=F2E65 :? AC:>2CJ 42C6] %96 A2E:6?ED D66? :? AC:>2CJ 42C6 H6C6 2=D@ :?56A6?56?E=J 2DD6DD65 3J 56>6?E:2 DA64:2=:DED[ 6?23=:?8 2 9625\E@\9625 4@>A2C:D@? @7 5:28?@DE:4 244FC24J 36EH66? AC:>2CJ 42C6 A9JD:4:2?D 2?5 DA64:2=:DED] %@ >62DFC6 C62=\H@C=5 :>A24E @? 4=:?:42= 564:D:@?\>2<:?8[ C6D62C496CD 4@>A2C65 A9JD:4:2?DV H@C<:?8 5:28?@D6D 2?5 >2?286>6?E A=2?D 367@C6 2?5 27E6C C646:G:?8 C6DF=ED 7C@> E96 !C64:G:EJpsakDFAm™k^DFAm 3=@@5 E6DE]k^Am
kAm%96 C6D62C496CD FD65 46C63C@DA:?2= 7=F:5 2?2=JD:D[ 2>J=@:5 !t% 2?5 2 4@?D6?DFD 5:28?@D:D 3J 56>6?E:2 6IA6CED E@ 2DD6DD E96 244FC24J @7 E96 5:28?@D6D] x? E96 :?E6C:> 2?2=JD:D[ E96 DA64:2=:DEDV 5:28?@DE:4 244FC24J C@D6 7C@> fcT 367@C6 E@ ghT 27E6C C646:G:?8 E96 3=@@5 E6DE C6DF=ED] x? E96 AC:>2CJ 42C6 8C@FA[ AC:>2CJ 42C6 A9JD:4:2?DV 5:28?@DE:4 244FC24J C@D6 7C@> edT 367@C6 E@ hbT 27E6C C646:G:?8 3=@@5 E6DE C6DF=ED] x? 2 9625\E@\9625 4@>A2C:D@? @7 E9@D6 A2E:6?ED[ DA64:2=:DED 249:6G65 hcT 244FC24J 27E6C C646:G:?8 E96 3=@@5 E6DE C6DF=ED]k^Am
kAmp55:E:@?2==J[ AC:>2CJ 42C6 4=:?:4:2?D 492?865 E96:C 5:28?@D6D 7@C b_T @7 A2E:6?ED[ H:E9 E96 8C62E6DE :>A24E D66? :? CF=:?8 @FE p=K96:>6CVD 2D E96 42FD6 @7 E96 A2E:6?EDV 4@8?:E:G6 :DDF6D] %96:C H:==:?8?6DD E@ CF=6 @FE p=K96:>6CVD :?4C62D65 7C@> `a]hT E@ adT 27E6C 2 ?682E:G6 E6DE C6DF=E] s6>6?E:2 6IA6CED 492?865 E96:C 5:28?@D:D :? a`]eT @7 A2E:6?ED 2?5 H6C6 72C >@C6 =:<6=J E@ >2<6 2? :>>65:2E6 p=K96:>6CVD 5:28?@D:D H:E9@FE 255:E:@?2= E6DE:?8 H96? E96 E6DE H2D A@D:E:G6 W`]hT E@ dd]cTX]k^Am
kAmp7E6C C646:G:?8 E96 3=@@5 E6DE C6DF=ED[ 4=:?:42= >2?286>6?E H2D C6G:D65 :? 23@FE 92=7 @7 E96 42D6D[ 3@E9 :? AC:>2CJ 2?5 D64@?52CJ 42C6[ :?4=F5:?8 492?86D E@ C676CC2=D[ 255:E:@?2= E6DE:?8 2?5 EC62E>6?E 564:D:@?D]k^Am
kAmQp ?682E:G6 C6DF=E 96=A65 AC:>2CJ 42C6 A9JD:4:2?D 4@?7:56?E=J CF=6 @FE p=K96:>6CVD 2?5 =@@< 7@C @E96C 42FD6D @7 E96 DJ>AE@>D[Q sC] !2=>BG:DE D2:5] QxEVD :>A@CE2?E E@ C6>6>36C E92E E96D6 3=@@5 E6DED 2C6 56D:8?65 DA64:7:42==J E@ 56E64E p=K96:>6CVD[ D@ A2E:6?ED H:E9 ?682E:G6 C6DF=ED >2J DE:== 92G6 @E96C ?6FC@=@8:42= 4@?5:E:@?D 2?5 >2J DE:== 36 DF:E23=6 7@C C676CC2= E@ 2 DA64:2=:DE 7@C 7FCE96C 6G2=F2E:@?]Qk^Am
kAm%@ 8F:56 AC:>2CJ 42C6 4=:?:4:2?D :? E96 2AAC@AC:2E6 FD6 @7 3=@@5 3:@>2C<6C E6DED[ E96 p=K96:>6CVD pDD@4:2E:@? :D AC6A2C:?8 2 4@?4:D6 564:D:@?\>2<:?8 E@@= E@ 36 A@DE65 @? k2 9C67lQ9EEADi^^6586]AC?6HDH:C6]4@>^4^=:?<^nEl_U2>Aj=l6?U2>Aj@lcfb_g_a\`U2>Aj9lhd_c_bbcU2>AjFl9EEADTbpTauTauAC@]2=K]@C8TauU2>Aj2lp{+!C@TraTptQ E2C86ElQ03=2?<Q C6=lQ?@7@==@HQmp{+!C@kDFAm®k^DFAmk^2m[ :ED 46?EC2= 9F3 @7 AC@76DD:@?2= C6D@FC46D] %96 pDD@4:2E:@? 92D 2=D@ AF3=:D965 k2 9C67lQ9EEADi^^6586]AC?6HDH:C6]4@>^4^=:?<^nEl_U2>Aj=l6?U2>Aj@lcfb_g_a\`U2>Aj9lbc_dfgh`bfU2>AjFl9EEADTbpTauTauAC@]2=K]@C8Tau9F3Tau42C6\A2E9H2JTau56E64E:@?\2?5\5:28?@D:DTau3=@@5\32D65\3:@>2C<6CD\8F:56=:?6U2>Aj2lr=:?:42=Z!C24E:46ZvF:56=:?6DQ E2C86ElQ03=2?<Q C6=lQ?@7@==@HQmr=:?:42= !C24E:46 vF:56=:?6Dk^2m E92E AC@G:56 4=62C[ 6G:56?46\32D65[ 3C2?5\28?@DE:4 C64@>>6?52E:@?D E@ DFAA@CE 2AAC@AC:2E6 FD6 @7 3=@@5 E6DED :? DA64:2=EJ 42C6 :? A6@A=6 6IA6C:6?4:?8 56>6?E:2 DJ>AE@>D]k^Am
kAmQq642FD6 ?@E 2== 3=@@5\32D65 3:@>2C<6C E6DED >66E E96 D2>6 DE2?52C5D 7@C 244FC24J[ 4=62C 6G:56?46\32D65 8F:52?46 :D 6DD6?E:2=[Q sC] pFC@C2 D2:5] Q%96D6 E@@=D 96=A 4=:?:4:2?D >2<6 :?7@C>65 564:D:@?D 23@FE FD:?8 E96 C:89E 3=@@5\32D65 3:@>2C<6C E6DE 7@C E96 C:89E A2E:6?E 2E E96 C:89E E:>6]Qk^Am
kAmkDEC@?8mp3@FE ppxrk^DEC@?8mk^Am
kAmppxr :D E96 H@C=5VD =2C86DE 82E96C:?8 @7 C6D62C496CD 7C@> 2C@F?5 E96 H@C=5 7@4FD65 @? p=K96:>6CVD 2?5 @E96C 5:D62D6D E92E 42FD6 56>6?E:2] pD 2 A2CE @7 E96 p=K96:>6CVD pDD@4:2E:@?VD C6D62C49 AC@8C2>[ ppxr D6CG6D 2D 2 42E2=JDE 7@C 86?6C2E:?8 ?6H <?@H=6586 23@FE 56>6?E:2 2?5 7@DE6C:?8 2 G:E2=[ 4@==68:2= C6D62C49 4@>>F?:EJ]k^Am
kF= EJA6lQ5:D4Qmk=:mppxr a_aei k2 9C67lQ9EEADi^^6586]AC?6HDH:C6]4@>^4^=:?<^nEl_U2>Aj=l6?U2>Aj@lcfb_g_a\`U2>Aj9lab_f_a`bd`U2>AjFl9EEADTbpTauTau22:4]2=K]@C8TauU2>Aj2l2=K]@C8Tau22:4Q E2C86ElQ03=2?<Q C6=lQ?@7@==@HQmkDEC@?8m2=K]@C8^22:4k^DEC@?8mk^2mk^=:mk=:mppxr a_ae ?6HDC@@>i k2 9C67lQ9EEADi^^6586]AC?6HDH:C6]4@>^4^=:?<^nEl_U2>Aj=l6?U2>Aj@lcfb_g_a\`U2>Aj9lbc_dacbg_U2>AjFl9EEADTbpTauTau22:4]2=K]@C8TauAC6DDC@@>]2DAU2>Aj2l2=K]@C8Tau22:4TauAC6DDC@@>]2DAQ E2C86ElQ03=2?<Q C6=lQ?@7@==@HQmkDEC@?8m2=K]@C8^22:4^AC6DDC@@>]2DAk^DEC@?8mk^2mk^=:mk=:mppxr a_ae 92D9E28i Rppxraek^=:mk^F=m
kAmkDEC@?8mp3@FE E96 p=K96:>6CVD pDD@4:2E:@?k^DEC@?8mk^Am
kAm%96 p=K96:>6CVD pDD@4:2E:@? :D 2 H@C=5H:56 G@=F?E2CJ 962=E9 @C82?:K2E:@? 565:42E65 E@ p=K96:>6CVD 42C6[ DFAA@CE 2?5 C6D62C49] ~FC >:DD:@? :D E@ =625 E96 H2J E@ 6?5 p=K96:>6CVD 2?5 2== @E96C 56>6?E:2 — 3J 2446=6C2E:?8 8=@32= C6D62C49[ 5C:G:?8 C:D< C65F4E:@? 2?5 62C=J 56E64E:@?[ 2?5 >2I:>:K:?8 BF2=:EJ 42C6 2?5 DFAA@CE] ~FC G:D:@? :D 2 H@C=5 H:E9@FE p=K96:>6CVD 2?5 2== @E96C 56>6?E:2kDFAm®k^DFAm] ':D:E k2 9C67lQ9EEADi^^6586]AC?6HDH:C6]4@>^4^=:?<^nEl_U2>Aj=l6?U2>Aj@lcfb_g_a\`U2>Aj9l`adefcabdhU2>AjFl9EEADTbpTauTauHHH]2=K]@C8TauU2>Aj2l2=K]@C8Q E2C86ElQ03=2?<Q C6=lQ?@7@==@HQmkDEC@?8m2=K]@C8k^DEC@?8mk^2m @C 42== Z` g__]afa]bh__]k^Am
kA :5lQ!&#{Qmk:>8 E:E=6lQr:D:@?Q H:5E9lQ`aQ 96:89ElQ`aQ 2=ElQr:D:@?Q DC4lQ9EEADi^^6586]AC?6HDH:C6]4@>^4^:>8^72G:4@?]A?8nD?lsr_begbU2>AjD5la_ae\_f\`cQ ^m ':6H @C:8:?2= 4@?E6?E E@ 5@H?=@25 >F=E:>65:2ik2 :5lQ!#}&#{Q C6=lQ?@7@==@HQ 9C67lQ9EEADi^^HHH]AC?6HDH:C6]4@>^?6HD\C6=62D6D^2=K96:>6CD\3=@@5\E6DE\4@F=5\3C:?8\9:89=J\244FC2E6\5:28?@D:D\:?E@\6G6CJ52J\4=:?:42=\42C6\b_agaccgc]9E>=Q E2C86ElQ03=2?<Qm9EEADi^^HHH]AC?6HDH:C6]4@>^?6HD\C6=62D6D^2=K96:>6CD\3=@@5\E6DE\4@F=5\3C:?8\9:89=J\244FC2E6\5:28?@D:D\:?E@\6G6CJ52J\4=:?:42=\42C6\b_agaccgc]9E>=k^2mk^Am
kAm$~&#rt p=K96:>6C’D pDD@4:2E:@?k^Am
kAmk:>8 2=ElQQ DC4lQ9EEADi^^CE]AC?6HDH:C6]4@>^CE]8:7n}6HDxE6>x5lsr_begbU2>Aj%C2?D>:DD:@?0x5la_ae_f`c___`!#0}t($0&$!#00000sr_begbU2>Ajs2E6x5la_ae_f`cQ DEJ=6lQ3@C56Ci_AIj H:5E9i`AIj 96:89Ei`AIjQ ^mk^Am
(0) comments
Welcome to the discussion.
Log In
Keep it Clean. Please avoid obscene, vulgar, lewd, racist or sexually-oriented language.
PLEASE TURN OFF YOUR CAPS LOCK.
Don't Threaten. Threats of harming another person will not be tolerated.
Be Truthful. Don't knowingly lie about anyone or anything.
Be Nice. No racism, sexism or any sort of -ism that is degrading to another person.
Be Proactive. Use the 'Report' link on each comment to let us know of abusive posts.
Share with Us. We'd love to hear eyewitness accounts, the history behind an article.