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Urine Trimethylamine And TMAO Test

Mississippi rates for HCPCS 0256U

Measures two related chemicals in urine — trimethylamine and its oxidized form, trimethylamine N-oxide — and reports them together as a paired profile. Trimethylamine is produced when gut bacteria break down certain foods, and the body normally converts it into trimethylamine N-oxide.

Rates data updated July 2026.

How much does Urine Trimethylamine And TMAO Test cost?

$145

Typical negotiated rate. In Mississippi, July 2026.

Insurers have agreed to pay about $145 for this service. The price depends on where it is billed: about $120 from a physician practice, and about $240 from a hospital or other facility. The two figures are alternatives, not parts of one bill.

These are rates insurers have negotiated with providers, not the amount a patient is billed. What you owe depends on your plan's deductible and coinsurance. Based on rates published by 4 insurance carriers under federal price transparency rules.

Where it's billed changes the price

Billed byTypicalRange
Physician practiceA doctor's office, clinic or independent provider$120$95.50 to $126
FacilityA hospital or hospital-owned outpatient department$240$158 to $288

How much rates vary

Facilitymedian $240 · 10th to 90th $145 to $288Professionalmedian $120 · 10th to 90th $79 to $158
$100$200facility $240professional $120

Distribution of negotiated rates across all payers (price axis is log-scale). Each curve is scaled to its own total: facility and professional rates are different services, shown together to compare where they cluster. Need provider-level prices or 24+ months of history? Contact us.

Rates by insurance carrier

Insurance Carrier
Aetna
Setting
Facility
Modifier
Global
Typical Low
$158.49
Median
$288.40
Typical High
$323.59
Aetna
Setting
Professional
Modifier
Global
Typical Low
$120.23
Median
$120.23
Typical High
$125.89
BCBS
Setting
Facility
Modifier
Global
Typical Low
$239.88
Median
$239.88
Typical High
$239.88
Cigna
Setting
Professional
Modifier
Global
Typical Low
$181.97
Median
$181.97
Typical High
$229.09
United
Setting
Facility
Modifier
Global
Typical Low
$144.54
Median
$144.54
Typical High
$158.49
United
Setting
Professional
Modifier
Global
Typical Low
$67.61
Median
$87.10
Typical High
$257.04

Where Mississippi sits

The same service costs 3.2 times more in South Dakota than in Kentucky. Every bar is a state, most expensive first. Touch or drag across it to read any state, then open that state for its carriers and full range.

Mississippi· 23rd of 51

$145

SD $309KY $95.50

Median negotiated rate in each state, from every insurer that publishes one. States where no insurer publishes a rate for this service are not shown.