The following STN databases have left truncation and simultaneous left and right truncation (SLART) in the specified search fields. The usual minimum stem length for left truncation is four (4) characters.
For additional information, refer to the individual Database Summary Sheets.
| Database | Fields |
| 1MOBILITY | BI, AB, TI |
| 2MOBILITY | BI, AB, TI |
| ADISCTI | BI, TI |
| ADISINSIGHT | BI, CNS, RNTE |
| ADISNEWS | BI, CT, TI, TX |
| AGRICOLA | BI, AB, TI |
| ANABSTR | BI, AB, TI |
| AUPATFULL | AB, BI, CLM, MCLM, TI |
| BIOSIS | BI, AB |
| BIOTECHNO | BI, CT |
| CA | BI, AB, IT, ST,TI |
| CABA | BI, AB, TI |
| CANPATFULL | BI, AB, CLM, MCLM, TI |
| CAPLUS | BI, AB, IT, ST, TI |
| CASFORMULTNS | BI, AB, ANTE, CNM, CNO, EAN, FD, GNO, NOTE, PNTE, TI |
| CASREACT | BI, NTE |
| CBNB | BI, CN |
| CEABA | BI, AB, ABEX, CT, TI |
| CHEMCATS | BI, CNS |
| CHEMLIST | BI |
| CIN | BI |
| CNFULL | BI, AB, CLM, MCLM, TI |
| COMPENDEX | BI, AB, TI |
| DCR | BI, CMT, CN, MF, SCT |
| DDFU | BI, AB, ABEX, CT, TI |
| DEFULL | BI, AB, ABDE, ABEN, CLM, CLMDE, CLMEN, MCLM, MCLMDE, MCLMEN, TI, TIDE, TIEN |
|
DRUGU |
BI, AB, ABEX, CT, TI |
|
EMBASE |
BI, AB, CNS, TI, ST |
| EPFULL |
BI, AB (ABEN, ABDE, ABFR), CLM (CLMEN, CLMDE, CLMFR), DETD (DETDEN, DETDDE, DETDFR), MCLM, (MCLMEN, MCLMDE, MCLMFR), TI (TIEN, TIDE, TIFR) |
| ESBIOBASE | BI, AB, CC, ST, TI |
| FRFULL | BI, AB, CLM, MCLM, TI |
| FSTA | BI, AB, TI |
| GBFULL | BI, AB, CLM, MCLM, TI |
| GENBANK | BI |
| GENESEQ | BI, DESC, FEAT, KT, ORGN, TI |
| GEOREF | BI, AB, TI |
| HCA | BI, AB, IT, ST, TI |
| HCAPLUS | BI, AB, IT, ST, TI |
| HCHEMLIST | BI |
| HCIN | BI |
| IFIALL | BI, AB, CLM, TI |
| IFIREF | BI |
| IMSRESEARCH | BI, CNS |
| INFULL | Bi, AB, CLM, MCLM, TI |
| INPADOCDB | BI, AB, TI |
| INPAFAMDB | BI, AB, TI |
| INSPEC | BI, AB, TI |
| JPFULL | BI, AB, ABEN, CLM, CLMEN, DETD, DETDEN, MCLM, MCLMEN, TI, TIEN |
| KOSMET | BI |
| KRFULL | BI, AB, CLM, MCLM, TI |
| LCA | BI, AB, TI |
| LCASREACT | BI, NTE |
| LEMBASE | BI, AB, CNS, ST, TI |
| LMEDLINE | BI, AB, CNS, TI |
| LREGISTRY | CNS, NTE |
| MEDLINE | BI, AB, CNS, TI |
| NAPRALERT | BI |
| NTIS | BI, AB, TI |
| PATGENE | BI, FEAT, ORGN, TI |
| PCTFULL | BI, AB (ABEN, ABFR, ABDE, ABES, ABOL), CLM (CLMEN. CLMFR, CLMDE, CLMES, CLMOL), DETD (DETDEN, DETDFR, DETDDE, DETDES, DETDOL), KT, TI (TIEN, TIFR, TIDE, TIES, TIOL) |
| PQSCITECH | BI, AB, TI |
| PS | BI, CNS |
| RAPRA | BI, CT, GT, NPT |
| RDISCLOSURE | BI, TI |
| REAXYSFILEBI | Bi, AB, TI |
| REAXYSFILESU | Bi, CN, CNS |
| REGISTRY | CNS, ENTE, NTE |
| RTECS | BI |
| RUFULL | BI, AB, CLM, DETD, KT, MCLM, TIEN |
| SCISEARCH | BI, AB, ST, STP, TI |
| TEMA | BI, AB, CT, CTDE, ST, TI, UT |
| TOXCENTER | BI, AB, CNS, TI |
| TWFULL | BI, AB, CLM, DETD, KT, MCLM, TIEN |
| USGENE | BI, DESC, FEAT, ORGN, TI |
| USPAT2 | BI, AB, TI, CLM, ECLM |
| USPATFULL | BI, AB, CLM, ECLM, TI |
| USPATOLD | BI, AB, CLM, TI |
| WPIDS | BI, BIEX, BIX, AB, ABEX, ACTV, ACTN, ADV, CLM, CNS, DETD, DRWD, NOV, TECH, TI, UADV, USE |
| WPINDEX | BI, BIEX, BIX, AB, ABEX, ACTV, ACTN, ADV, CLM, CNS, DETD, DRWD, NOV, TECH, TI, UADV, USE |
| WPIX | BI, BIEX, BIX, AB, ABEX, ACTV, ACTN, ADV, CLM, CNS, DETD, DRWD, NOV, TECH, TI, UADV, USE |
| WSCA | BI, CN |
| ZCA | BI, AB, IT, ST, TI |
| ZCAPLUS | BI, AB, IT, ST, TI |
| ZREGISTRY | CNS, ENTE, NTE |