Total T4 test cost in Slidell, LA
In Slidell-Mandeville-Covington, LA, 2 hospitals list a cash price for total thyroxine (T4) blood test: from $11.48 to $17.18, with a median of $14.33. The lowest listed price is at Lakeview Hospital — $2.85 less than the median here. Across Louisiana, the median is $23.29 at 56 hospitals.
Cash prices at 2 facilities for code 84436, as an outpatient — the setting a self-pay patient normally buys. Collected Sep 29, 2026; the hospital files themselves were last updated between Jul 1, 2026 and Jul 1, 2026.
Where each hospital's price falls
Each dot is one hospital's cash price on a scale from the lowest to the highest in Slidell-Mandeville-Covington, LA.
Hospitals, cheapest first
| Hospital | Cash price | List price | Insurers pay | Off list | File date |
|---|---|---|---|---|---|
| Lakeview Hospital lowest Covington, LA · (504) 988-5263 Labcorp T4 Total | $11.48 | $82.00 | $10.24–$82.00 | 86% | Jul 1, 2026 source file |
| Lakeview Hospital lowest Covington, LA · (504) 988-5263 Arup T4 Total | $11.48 | $82.00 | $10.24–$82.00 | 86% | Jul 1, 2026 source file |
| Fairway Medical Center Covington, LA · (985) 809-9888 Thyroxine T4 LC | $17.18 | $34.00 | $7.45 | 49% | — source file |
| Lakeview Hospital Covington, LA · (504) 988-5263 Thyroxine (Thyroid Chemical) Measurement | $41.16 | $294.00 | $10.24–$88.20 | 86% | Jul 1, 2026 source file |
Outpatient: lowest $11.48, median $14.33, highest $17.18 — a 1.5× difference within the same market.
Cash or insurance?
At 1 of 2 hospitals that publish insurer rates for this code here, the cash price is below the highest rate a health plan has negotiated, and at none is it below every plan's rate. If you have insurance but have not met your deductible, you usually pay your plan's negotiated rate, which falls somewhere in the "Insurers pay" column. Paying cash can cost less, but a cash payment usually does not count toward your deductible. Ask the hospital for both numbers before you book.
What it is
A total T4 test measures all the thyroxine hormone in the blood, both bound and free. Most doctors now order free T4 (84439) instead, which is less affected by pregnancy and medicines.
What the price covers
The price usually covers running the test. The blood draw (36415) is often billed as a separate line.