Lab tests CPT 84681 Inpatient — admitted to hospital

C-peptide test cost in Columbia, MO — inpatient

In Columbia, MO, 2 hospitals list a cash price for C-peptide blood test as an inpatient: from $57.60 to $113.64, with a median of $85.62. The lowest listed price is at Boone Hospital Center — $28.02 less than the median here. Across Missouri, the median is $105.75 at 61 hospitals.

Cash prices at 2 facilities for code 84681, as an inpatient (admitted to hospital) . Collected Sep 22, 2026; the hospital files themselves were last updated between Dec 15, 2025 and Apr 1, 2026.

Lowest$57.60Boone Hospital Center

Median$85.62half of hospitals charge less

Highest$113.64in this market

Difference2.0×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 Columbia, MO.

median

Lowest $57.60Highest $119.88

Hospitals, cheapest first

Hospital	Cash price	List price	Insurers pay	Off list
Boone Hospital Center lowest Columbia, MO · (573) 815-8000 C-PEPTIDE File of Apr 1, 2026 · source file	$57.60	$96.00	—	40%
Curators of the University of Missouri Columbia, MO · (573) 882-4141 C-PEPTIDE P28620201 File of Dec 15, 2025 · source file	$113.64	$189.40	$51.52–$166.67	40%
Curators of the University of Missouri Columbia, MO · (573) 882-4141 C-PEPTIDE P28631966+1 more line at this price File of Dec 15, 2025 · source file	$119.88	$199.80	$54.35–$175.82	40%

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.

Inpatient: lowest $57.60, median $85.62, highest $113.64 — a 2.0× difference within the same market.

As an outpatient, the same code is billed by 2 facilities here, median $85.62 — that is the price to compare if you are not being admitted.

Cash or insurance?

At the one hospital here that publishes insurer rates for this code, the cash price is below the highest rate a health plan has negotiated. 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.