diff --git a/tests/testthat/test-ncbi_get_meta.R b/tests/testthat/test-ncbi_get_meta.R
index d436209..b460278 100644
--- a/tests/testthat/test-ncbi_get_meta.R
+++ b/tests/testthat/test-ncbi_get_meta.R
@@ -4,7 +4,11 @@ test_that("ncbi_get_meta() works with history", {
   # with history, use history, one batch
   uids <- ncbi_get_uid("Microthrix parvicella", db = "biosample")
   meta <- suppressWarnings(ncbi_get_meta(uids))
-  expect_s3_class(meta, c("ncbi_meta", "tbl_df", "tbl", "data.frame"))
+  testthat::expect_true(inherits(meta, "list"))
+  testthat::expect_s3_class(
+    meta$main, 
+    c("ncbi_meta", "tbl_df", "tbl", "data.frame")
+  )
   
   # with history, use history, multiple batches
   uids <- ncbi_get_uid(
@@ -13,8 +17,12 @@ test_that("ncbi_get_meta() works with history", {
     batch_size = 5
   )
   meta <- suppressWarnings(ncbi_get_meta(uids))
-  expect_s3_class(meta, c("ncbi_meta", "tbl_df", "tbl", "data.frame"))
-  expect_equal(nrow(meta), length(uids$uid))
+  testthat::expect_true(inherits(meta, "list"))
+  testthat::expect_s3_class(
+    meta$main, 
+    c("ncbi_meta", "tbl_df", "tbl", "data.frame")
+  )
+  testthat::expect_equal(nrow(meta$main), length(uids$uid))
 })
 
 test_that("ncbi_get_meta() works without history", {
@@ -25,14 +33,24 @@ test_that("ncbi_get_meta() works without history", {
     use_history = TRUE
   )
   meta <- suppressWarnings(ncbi_get_meta(uids, use_history = FALSE))
-  expect_s3_class(meta, c("ncbi_meta", "tbl_df", "tbl", "data.frame"))
+  testthat::expect_true(inherits(meta, "list"))
+  testthat::expect_s3_class(
+    meta$main, 
+    c("ncbi_meta", "tbl_df", "tbl", "data.frame")
+  )
+  
   # with history, do not use history, multiple batches
   meta <- suppressWarnings(ncbi_get_meta(
     uids,
     use_history = FALSE,
     batch_size = 5
   ))
-  expect_s3_class(meta, c("ncbi_meta", "tbl_df", "tbl", "data.frame"))
+  testthat::expect_true(inherits(meta, "list"))
+  testthat::expect_s3_class(
+    meta$main, 
+    c("ncbi_meta", "tbl_df", "tbl", "data.frame")
+  )
+  
   # without history, attempt to use history but fall back, one batch
   uids <- ncbi_get_uid(
     "Microthrix parvicella",
@@ -40,13 +58,21 @@ test_that("ncbi_get_meta() works without history", {
     use_history = FALSE
   )
   meta <- suppressWarnings(ncbi_get_meta(uids))
-  expect_s3_class(meta, c("ncbi_meta", "tbl_df", "tbl", "data.frame"))
+  testthat::expect_true(inherits(meta, "list"))
+  testthat::expect_s3_class(
+    meta$main, 
+    c("ncbi_meta", "tbl_df", "tbl", "data.frame")
+  )
   # only ids, one batch
   meta <- suppressWarnings(ncbi_get_meta(
     uids$uid,
     db = "biosample"
   ))
-  expect_s3_class(meta, c("ncbi_meta", "tbl_df", "tbl", "data.frame"))
+  testthat::expect_true(inherits(meta, "list"))
+  testthat::expect_s3_class(
+    meta$main, 
+    c("ncbi_meta", "tbl_df", "tbl", "data.frame")
+  )
   
   # only ids, multiple batches
   meta <- suppressWarnings(ncbi_get_meta(
@@ -54,7 +80,11 @@ test_that("ncbi_get_meta() works without history", {
     db = "biosample",
     batch_size = 5
   ))
-  expect_s3_class(meta, c("ncbi_meta", "tbl_df", "tbl", "data.frame"))
+  testthat::expect_true(inherits(meta, "list"))
+  testthat::expect_s3_class(
+    meta$main, 
+    c("ncbi_meta", "tbl_df", "tbl", "data.frame")
+  )
 })
 
 test_that("ncbi_get_meta() works with all supported dbs", {
diff --git a/tests/testthat/test-ncbi_parse.R b/tests/testthat/test-ncbi_parse.R
index f5d5e5c..e836945 100644
--- a/tests/testthat/test-ncbi_parse.R
+++ b/tests/testthat/test-ncbi_parse.R
@@ -4,15 +4,20 @@ test_that("ncbi_parse() works with a BioSample", {
   data(examples)
   biosample_uid <- ncbi_get_uid(examples$biosample[1], db = "biosample")
   res <- ncbi_get_meta(biosample_uid)
-  expect_s3_class(res, c("tbl_df", "tbl", "data.frame"))
-  expect_equal(res$biosample, "SAMN02714232")
+  testthat::expect_true(inherits(res, "list"))
+  testthat::expect_s3_class(res$main, c("tbl_df", "tbl", "data.frame"))
+  expect_equal(res$main$biosample, "SAMN02714232")
 })
 
 test_that("ncbi_parse() works with all BioSamples", {
   data(examples)
   biosample_uid <- ncbi_get_uid(examples$biosample, db = "biosample")
   res <- ncbi_get_meta(biosample_uid)
-  expect_s3_class(res, c("tbl_df", "tbl", "data.frame"))
-  expect_equal(nrow(res), length(examples$biosample))
+  testthat::expect_true(inherits(res, "list"))
+  testthat::expect_equal(length(res), 2)
+  testthat::expect_equal(names(res), c("main", "antibiogram"))
+  testthat::expect_s3_class(res$main, c("tbl_df", "tbl", "data.frame"))
+  testthat::expect_s3_class(res$antibiogram, c("tbl_df", "tbl", "data.frame"))
+  expect_equal(nrow(res$main), length(examples$biosample))
 })