IDT for Illumina UD Indexes
The following tables depict plate layouts and pooling strategies for IDT for Illumina UD Indexes, which are designed for dual indexing.
The IDT for Illumina UD Indexes include IDT for Illumina Nextera DNA UD Indexes, IDT for Illumina DNA/RNA UD Indexes, and IDT for Illumina PCR UD Indexes.

1 |
2 |
3 |
4 |
5 |
6 |
7 |
8 |
9 |
10 |
11 |
12 |
|
---|---|---|---|---|---|---|---|---|---|---|---|---|
A |
UDP0001 |
UDP0009 |
UDP0017 |
UDP0025 |
UDP0033 |
UDP0041 |
UDP0049 |
UDP0057 |
UDP0065 |
UDP0073 |
UDP0081 |
UDP0089 |
B |
UDP0002 |
UDP0010 |
UDP0018 |
UDP0026 |
UDP0034 |
UDP0042 |
UDP0050 |
UDP0058 |
UDP0066 |
UDP0074 |
UDP0082 |
UDP0090 |
C |
UDP0003 |
UDP0011 |
UDP0019 |
UDP0027 |
UDP0035 |
UDP0043 |
UDP0051 |
UDP0059 |
UDP0067 |
UDP0075 |
UDP0083 |
UDP0091 |
D |
UDP0004 |
UDP0012 |
UDP0020 |
UDP0028 |
UDP0036 |
UDP0044 |
UDP0052 |
UDP0060 |
UDP0068 |
UDP0076 |
UDP0084 |
UDP0092 |
E |
UDP0005 |
UDP0013 |
UDP0021 |
UDP0029 |
UDP0037 |
UDP0045 |
UDP0053 |
UDP0061 |
UDP0069 |
UDP0077 |
UDP0085 |
UDP0093 |
F |
UDP0006 |
UDP0014 |
UDP0022 |
UDP0030 |
UDP0038 |
UDP0046 |
UDP0054 |
UDP0062 |
UDP0070 |
UDP0078 |
UDP0086 |
UDP0094 |
G |
UDP0007 |
UDP0015 |
UDP0023 |
UDP0031 |
UDP0039 |
UDP0047 |
UDP0055 |
UDP0063 |
UDP0071 |
UDP0079 |
UDP0087 |
UDP0095 |
H |
UDP0008 |
UDP0016 |
UDP0024 |
UDP0032 |
UDP0040 |
UDP0048 |
UDP0056 |
UDP0064 |
UDP0072 |
UDP0080 |
UDP0088 |
UDP0096 |

1 |
2 |
3 |
4 |
5 |
6 |
7 |
8 |
9 |
10 |
11 |
12 |
|
---|---|---|---|---|---|---|---|---|---|---|---|---|
A |
UDP0097 |
UDP0105 |
UDP0113 |
UDP0121 |
UDP0129 |
UDP0137 |
UDP0145 |
UDP0153 |
UDP0161 |
UDP0169 |
UDP0177 |
UDP0185 |
B |
UDP0098 |
UDP0106 |
UDP0114 |
UDP0122 |
UDP0130 |
UDP0138 |
UDP0146 |
UDP0154 |
UDP0162 |
UDP0170 |
UDP0178 |
UDP0186 |
C |
UDP0099 |
UDP0107 |
UDP0115 |
UDP0123 |
UDP0131 |
UDP0139 |
UDP0147 |
UDP0155 |
UDP0163 |
UDP0171 |
UDP0179 |
UDP0187 |
D |
UDP0100 |
UDP0108 |
UDP0116 |
UDP0124 |
UDP0132 |
UDP0140 |
UDP0148 |
UDP0156 |
UDP0164 |
UDP0172 |
UDP0180 |
UDP0188 |
E |
UDP0101 |
UDP0109 |
UDP0117 |
UDP0125 |
UDP0133 |
UDP0141 |
UDP0149 |
UDP0157 |
UDP0165 |
UDP0173 |
UDP0181 |
UDP0189 |
F |
UDP0102 |
UDP0110 |
UDP0118 |
UDP0126 |
UDP0134 |
UDP0142 |
UDP0150 |
UDP0158 |
UDP0166 |
UDP0174 |
UDP0182 |
UDP0190 |
G |
UDP0103 |
UDP0111 |
UDP0119 |
UDP0127 |
UDP0135 |
UDP0143 |
UDP0151 |
UDP0159 |
UDP0167 |
UDP0175 |
UDP0183 |
UDP0191 |
H |
UDP0104 |
UDP0112 |
UDP0120 |
UDP0128 |
UDP0136 |
UDP0144 |
UDP0152 |
UDP0160 |
UDP0168 |
UDP0176 |
UDP0184 |
UDP0192 |

The V2 indication applies only to IDT for Illumina DNA/RNA and PCR UD Indexes. IDT for Illumina Nextera DNA UD Indexes do not include V2 indexes.
1 |
2 |
3 |
4 |
5 |
6 |
7 |
8 |
9 |
10 |
11 |
12 |
|
---|---|---|---|---|---|---|---|---|---|---|---|---|
A |
UDP0193 |
UDP0201 |
UDP0209 |
UDP0217 |
UDP0225 |
UDP0233 |
UDP0241 |
UDP0249 |
UDP0257 |
UDP0265 |
UDP0273 |
UDP0281 |
B |
UDP0194 |
UDP0202 |
UDP0210 |
UDP0218 |
UDP0226 |
UDP0234 |
UDP0242 |
UDP0250 |
UDP0256V2 |
UDP0266 |
UDP0274 |
UDP0282 |
C |
UDP0195 |
UDP0203 |
UDP0211 |
UDP0219 |
UDP0227 |
UDP0235 |
UDP0243 |
UDP0251 |
UDP0259 |
UDP0267 |
UDP0275 |
UDP0283 |
D |
UDP0196 |
UDP0204 |
UDP0212 |
UDP0220 |
UDP0228 |
UDP0236 |
UDP0244 |
UDP0252V2 |
UDP0260 |
UDP0268 |
UDP0276 |
UDP0284 |
E |
UDP0197 |
UDP0205 |
UDP0213 |
UDP0221 |
UDP0229 |
UDP0237 |
UDP0245 |
UDP0253 |
UDP0261 |
UDP0269 |
UDP0277 |
UDP0285 |
F |
UDP0198 |
UDP0206 |
UDP0214 |
UDP0222 |
UDP0230 |
UDP0238 |
UDP0246 |
UDP0254 |
UDP0262 |
UDP0270 |
UDP0278 |
UDP0286 |
G |
UDP0199 |
UDP0207 |
UDP0215 |
UDP0223 |
UDP0231 |
UDP0239 |
UDP0247 |
UDP0255 |
UDP0263 |
UDP0271 |
UDP0279 |
UDP0287 |
H |
UDP0200 |
UDP0208 |
UDP0216 |
UDP0224 |
UDP0232 |
UDP0240 |
UDP0248 |
UDP0256 |
UDP0264 |
UDP0272 |
UDP0280 |
UDP0288 |

The V2 indication applies only to IDT for Illumina DNA/RNA and PCR UD Indexes. IDT for Illumina Nextera DNA UD Indexes do not include V2 indexes.
1 |
2 |
3 |
4 |
5 |
6 |
7 |
8 |
9 |
10 |
11 |
12 |
|
---|---|---|---|---|---|---|---|---|---|---|---|---|
A |
UDP0289V2 |
UDP0297 |
UDP0305 |
UDP0313 |
UDP0321 |
UDP0329 |
UDP0337 |
UDP0345 |
UDP0353 |
UDP0361 |
UDP0369 |
UDP0377 |
B |
UDP0290V2 |
UDP0298 |
UDP0306 |
UDP0314 |
UDP0322 |
UDP0330 |
UDP0338 |
UDP0346 |
UDP0354 |
UDP0362 |
UDP0370 |
UDP0378 |
C |
UDP0291V2 |
UDP0299 |
UDP0307 |
UDP0315 |
UDP0323 |
UDP0331 |
UDP0339 |
UDP0347 |
UDP0355 |
UDP0363 |
UDP0371 |
UDP0379 |
D |
UDP0292 |
UDP0300 |
UDP0308 |
UDP0316 |
UDP0324 |
UDP0332 |
UDP0340 |
UDP0348 |
UDP0356 |
UDP0364 |
UDP0372 |
UDP0380 |
E |
UDP0293 |
UDP0301V2 |
UDP0309 |
UDP0317 |
UDP0325 |
UDP0333 |
UDP0341 |
UDP0349 |
UDP0357 |
UDP0365 |
UDP0373 |
UDP0381 |
F |
UDP0294 |
UDP0302 |
UDP0310 |
UDP0318 |
UDP0326 |
UDP0334 |
UDP0342 |
UDP0350 |
UDP0358 |
UDP0366 |
UDP0374 |
UDP0382 |
G |
UDP0295 |
UDP0303 |
UDP0311 |
UDP0319 |
UDP0327 |
UDP0335 |
UDP0343 |
UDP0351 |
UDP0359 |
UDP0367 |
UDP0375 |
UDP0383 |
H |
UDP0296 |
UDP0304 |
UDP0312 |
UDP0320 |
UDP0328 |
UDP0336 |
UDP0344 |
UDP0352 |
UDP0360 |
UDP0368 |
UDP0376 |
UDP0384 |

The following table shows index adapters (wells) that can be combined in a two- to eight-plex pool, while the color-coded figure illustrates each combination.
Pool any plexity ≥ 2 from the top or bottom of a column. Do not pool across a row.
Plexity |
Combinations |
Color in Figure |
||||||
---|---|---|---|---|---|---|---|---|
2 |
The first two or last two wells in a column:
Rows C–F are not used. |
Orange |
||||||
3 |
The first three or last three wells in a column:
Rows D and E are not used. |
Gray |
||||||
4 |
The first four or last four wells in a column:
|
Purple |
||||||
5 |
The first five or last five wells in a column:
|
Blue |
||||||
6 |
[Option 1] The first six or last six wells in a column:
[Option 2] The first two wells (A and B) or last two wells (G and H) in one column, and any four wells in an adjacent column. |
Green |
||||||
7 |
The first seven or last seven wells in a column:
|
Pink |
||||||
8 |
The entire column. |
Teal |

This section applies to any instruments using XLEAP-SBS Chemistry.
Pool any plexity ≥ 2 from the top or bottom of a column. Do not pool across a row.
The following table shows index adapters (wells) that can be combined in a two-plex or three-plex pool.
Plexity |
Combinations Set A |
Combinations Set B |
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---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
2 |
|
|
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3 |
|
|
The following figures display four-plex through eight-plex index pooling recommendations by column for Plates A and B. Numbers represent plate columns, and letters represent the rows to be paired within each column. For instance, Plate A, column 2, rows ABCD represent indexes UDP0009, UDP0010, UDP0011, and UDP0012.
The orange wells in the following color-coded figures are not recommended for use.
IDT for Illumina UD Plate A Indexes
IDT for Illumina UD Plate B Indexes

Use index adapters from any wells that optimize color balance in a sequencing run, for example:
• | A1–H1 and A2 |
• | A4–D4 and A5–E5 |
• | A7–F7 and A8–C8 |
• | A10–C10, A11–C11, and A12–C12 |
The following figure depicts all four examples.