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Urine Trimethylamine And TMAO Test

Iowa 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?

$191

Typical negotiated rate. In Iowa, July 2026.

Insurers have agreed to pay about $191 for this service. The price depends on where it is billed: about $158 from a physician practice, and about $282 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 7 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$158$95.50 to $309
FacilityA hospital or hospital-owned outpatient department$282$158 to $427

How much rates vary

Facilitymedian $282 · 10th to 90th $158 to $468Professionalmedian $158 · 10th to 90th $95 to $380
$100$200$500facility $282professional $158

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
$380.19
Typical High
$467.74
Aetna
Setting
Professional
Modifier
Global
Typical Low
$104.71
Median
$104.71
Typical High
$104.71
Cigna
Setting
Professional
Modifier
Global
Typical Low
$229.09
Median
$309.03
Typical High
$380.19
Hally Health
Setting
Professional
Modifier
Global
Typical Low
$134.90
Median
$199.53
Typical High
$281.84
Medica
Setting
Facility
Modifier
Global
Typical Low
$158.49
Median
$190.55
Typical High
$426.58
Medica
Setting
Professional
Modifier
Global
Typical Low
$95.50
Median
$95.50
Typical High
$346.74
Midlands
Setting
Professional
Modifier
Global
Typical Low
$194.98
Median
$194.98
Typical High
$194.98
United
Setting
Facility
Modifier
Global
Typical Low
$158.49
Median
$158.49
Typical High
$354.81
United
Setting
Professional
Modifier
Global
Typical Low
$95.50
Median
$95.50
Typical High
$346.74
Wellmark
Setting
Professional
Modifier
Global
Typical Low
$125.89
Median
$158.49
Typical High
$158.49

Where Iowa 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.

Iowa· 8th of 51

$191

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.