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Blood Phosphorus (Phosphate) Test

Louisiana rates for HCPCS 84100

Measures the amount of phosphate, a mineral the body uses for bone strength, energy production and cell function, in a blood sample. Levels drift when the kidneys are not clearing phosphate properly, when the parathyroid glands are over- or under-active, or when vitamin D is out of balance, so it is usually read alongside calcium. Measuring phosphate in a urine sample is a separate test.

Rates data updated October 2026.

How much does Blood Phosphorus (Phosphate) Test cost?

$5.25

Typical negotiated rate. In Louisiana, October 2026.

Insurers have agreed to pay about $5.25 for this service. The price depends on where it is billed: about $4.79 from a physician practice, and about $6.17 from a hospital or other facility.

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 6 insurance carriers under federal price transparency rules.

Prices by location type

Billed byTypicalRange
Physician practiceA doctor's office, clinic or independent provider$4.79$2.75 to $5.75
FacilityA hospital or hospital-owned outpatient department$6.17$4.79 to $10.23

How much rates vary

Facilitymedian $6 · 10th to 90th $5 to $17Professionalmedian $5 · 10th to 90th $2 to $7
$2$5$10$20facility $6professional $5

Distribution of negotiated rates across all payers (price axis is log-scale). Need provider-level prices or 24+ months of history? Contact us.

Rates by insurance carrier

Insurance Carrier
Aetna
Setting
Facility
Modifier
None
Typical Low
$5.01
Median
$6.17
Typical High
$20.42
Aetna
Setting
Facility
Modifier
52 · Reduced service
Typical Low
$2.51
Median
$3.24
Typical High
$12.02
Aetna
Setting
Facility
Modifier
53 · Discontinued
Typical Low
$1.00
Median
$1.29
Typical High
$4.90
Aetna
Setting
Professional
Modifier
None
Typical Low
$3.72
Median
$5.75
Typical High
$9.55
Aetna
Setting
Professional
Modifier
52 · Reduced service
Typical Low
$2.51
Median
$2.88
Typical High
$3.09
Aetna
Setting
Professional
Modifier
53 · Discontinued
Typical Low
$1.00
Median
$1.15
Typical High
$1.23
Ambetter
Setting
Professional
Modifier
None
Typical Low
$1.45
Median
$3.24
Typical High
$6.03
BCBS Louisiana
Setting
Facility
Modifier
None
Typical Low
$5.89
Median
$9.77
Typical High
$17.78
BCBS Louisiana
Setting
Professional
Modifier
None
Typical Low
$3.98
Median
$5.25
Typical High
$7.08
Christus
Setting
Facility
Modifier
None
Typical Low
$4.79
Median
$4.79
Typical High
$4.79
Cigna
Setting
Facility
Modifier
None
Typical Low
$5.25
Median
$10.72
Typical High
$28.18
Cigna
Setting
Professional
Modifier
None
Typical Low
$2.29
Median
$3.16
Typical High
$5.75
United
Setting
Facility
Modifier
None
Typical Low
$2.00
Median
$4.27
Typical High
$4.79
United
Setting
Professional
Modifier
None
Typical Low
$2.00
Median
$2.75
Typical High
$6.17

Where Louisiana sits

The same service costs 11.7 times more in Vermont than in Maryland. 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.

Louisiana· 27th of 51

$5.25

VT $41.69MD $3.55

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.