The doctor dictates in this report:
His thyroid was drawn on 09/07, which is normal.
His thyroid was drawn on 09/07, which was normal.
There is no background information. He is talking about the patient's laboratory tests. Which one should I use. This is how he dictates it.
"which is normal" = in the normal range
"which was normal" = normal for that patient at the time of the test.
By the way, can you give individual titles to your posts?