Chloride 24 hour urine at Advocate Illinois Masonic Medical Center

836 West Wellington Avenue, Chicago, IL · Advocate Health · · NPI 1912014564

Source: hospital's published price file ↗ · Published Nov 4, 2025 · Ingested Aug 13, 2026

$35.00

Cash price

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Discounted cash price

What a hospital charges a self-pay patient who pays directly, without going through insurance — usually well below the gross charge.

Example: A CT scan has a $3,200 gross charge but an $850 discounted cash price. Ask for it by name when scheduling — hospitals don't always advertise it up front.

Full explanation →

What you pay up front if you don't use insurance.

$70.00

Gross charge

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Gross charge (chargemaster price)

The hospital's full, undiscounted list price — pulled from its internal "chargemaster" price list. Almost no one actually pays this.

Example: A chest X-ray has a gross charge of $1,450. The same hospital's discounted cash price for the same X-ray is $180 — the gross charge mostly anchors negotiations, not what patients pay.

Full explanation →

The hospital's undiscounted list price — almost no one pays this.

$5.75 with United Healthcare Nexus vs $56.98 with Blue Cross Blue Shield — same scan, same building. Share

Negotiated rates by payer
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Negotiated rate

The price a specific insurance plan agreed to pay the hospital for a service — it varies by insurer, and even by plan within the same insurer.

Example: The same knee MRI has a negotiated rate of $904 with one insurer's PPO plan and $1,509 with another's — identical hospital, identical scan.

Full explanation →

Payer
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Payer

The insurance company footing the bill — Aetna, UnitedHealthcare, Medicare, and so on.

Example: "Blue Cross Blue Shield" is the payer. Its negotiated rate for an MRI might be $904, while a different payer's negotiated rate for the same scan is $1,509.

Full explanation →
Plan
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Plan

The specific product an insurer sells — e.g. "Blue Cross PPO 500" — which sets your deductible, coinsurance and negotiated rates.

Example: Two people both insured by Aetna can owe very different amounts for the same MRI: $50 with an HMO plan's flat copay, or the full $1,200 toward a high-deductible PPO plan's unmet deductible.

Full explanation →
Negotiated rate vs. cash
United Healthcare Nexus Commercial $5.75 ↓ -84%
United Healthcare Core Navigate Commercial $5.75 ↓ -84%
United Healthcare Charter Commercial $5.75 ↓ -84%
United Healthcare HMO $5.75 ↓ -84%
Molina Medicare Advantage $8.34 ↓ -76%
Ambetter Medicare Advantage $8.34 ↓ -76%
Oscar Health HMO Medicare Advantage $8.63 ↓ -75%
HSTechnology Medicare Advantage $11.04 ↓ -68%
Blue Cross Blue Shield City of Chicago Commercial $24.95 ↓ -29%
Cigna One Health Commercial $26.79 ↓ -23%
Cigna Commercial $26.79 ↓ -23%
Blue Cross Blue Shield Choice Commercial $26.96 ↓ -23%
Aetna Commercial $27.24 ↓ -22%
Advocate Employee Commercial $27.58 ↓ -21%
Blue Cross Blue Shield PPO $28.39 ↓ -19%
Private Healthcare Systems Commercial $37.80 ↑ +8%
Blue Cross Blue Shield Blue Precision Managed Care $56.00 ↑ +60%
Multiplan Commercial $56.00 ↑ +60%
Blue Cross Blue Shield HMO $56.98 ↑ +63%

Visitor-reported prices

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Chloride 24 hour urine at other Illinois hospitals

Hospital City Cash price Negotiated range
Advocate Trinity Hospital Chicago $35.00 $5.75 – $56.00
Ascension Saint Joseph - Chicago (Presence Chicago Hospital Network) Chicago $14.52 $4.31 – $24.52
MercyOne Genesis Silvis Medical Center Silvis $40.80 $4.42 – $62.56
MercyOne Genesis Aledo Medical Center Aledo $40.80 $6.61 – $31.96
Uchicago Medicine Adventhealth Hinsdale Hinsdale $22.50 $5.63 – $9.32
Advocate Christ Medical Center Oak Lawn $35.00 $5.75 – $56.00
Advocate Condell Medical Center Libertyville $35.00 $5.75 – $56.00
Advocate Good Samaritan Hospital Downers Grove $35.00 $5.75 – $56.00

All Illinois hospitals for this procedure →