Lab tests CPT 84681 Outpatient

C-peptide test cost in Paducah, KY

In Paducah, KY-IL, 3 hospitals list a cash price for C-peptide blood test: from $67.20 to $1,302.84, with a median of $148.80. The lowest listed price is at Mercy Health Lourdes Hospital — $81.60 less than the median here. Across Kentucky, the median is $138.85 at 76 hospitals.

Cash prices at 3 facilities across 2 cities for code 84681, as an outpatient — the setting a self-pay patient normally buys. Collected Oct 2, 2026; the hospital files themselves were last updated between Apr 1, 2026 and Sep 28, 2026.

Lowest$67.20Mercy Health Lourdes Hospital

Median$148.80half of hospitals charge less

Highest$1,302.84in this market

Difference19.4×highest vs lowest

Where each hospital's price falls

Each dot is one hospital's cash price on a scale from the lowest to the highest in Paducah, KY-IL.

median

Lowest $67.20Highest $1,302.84

Hospitals, cheapest first

Hospital	Cash price	List price	Insurers pay	Off list
Mercy Health Lourdes Hospital lowest Paducah, KY · (270) 444-2444 HC Assay of C-Peptide File of Apr 1, 2026 · source file	$67.20	$112.00	—	40%
Mercy Health Lourdes Hospital Paducah, KY · (270) 444-2444 HC So Peptide,C File of Apr 1, 2026 · source file	$77.40	$129.00	—	40%
Livingston Hospital and Healthcare Services Salem, KY · (270) 988-2299 C-Peptide LC+1 more line at this price File of Aug 25, 2026 · source file	$148.80	$248.00	$16.31–$210.80	40%
Baptist Health Paducah Paducah, KY · (270) 575-2100 C-peptide (protein) level File of Sep 28, 2026 · source file	$1,302.84	$1,737.12	$16.31–$3,474.24	25%

Hospital The hospital that published the price, its city and the line exactly as written in its price file.

Cash price The hospital's own price for a patient paying without insurance (“discounted cash” in its price file). Hospitals must publish it under federal law, 45 CFR 180.50. Call to confirm it before booking. More

List price The hospital's full chargemaster price (“gross charge”) before any discount. Almost nobody pays it; the gap to the cash price shows what the self-pay discount is worth. More

Insurers pay The lowest and highest rates this hospital has agreed with insurance plans for the same item, from its price file. If the cash price is below what your plan pays and you have not met your deductible, paying cash can cost you less. More

Off list How much lower the cash price is than the list price.

Outpatient: lowest $67.20, median $148.80, highest $1,302.84 — a 19.4× difference within the same market.

As an inpatient, the same code is billed by 2 facilities here, median $113.10. Inpatient and outpatient prices are not comparable and are kept on separate pages: the inpatient charge covers admission, not the same purchase.

Cash or insurance?

At 2 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 C-peptide test shows how much insulin the pancreas is making. It helps tell type 1 from type 2 diabetes and find the cause of low blood sugar.

What the price covers

The price usually covers running the test. The blood draw (36415) is often billed as a separate line.